mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-16 08:13:17 +00:00
56c3aa9ab9
The QEMU emulation of m68k does not support DMA timer, the only timer that is supported is the PIT timer. Implement trivial PIT timer support for m68k. Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
1048 lines
25 KiB
C
1048 lines
25 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* (C) Copyright 2002-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*/
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#include <common.h>
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#include <bloblist.h>
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#include <bootstage.h>
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#include <clock_legacy.h>
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#include <console.h>
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#include <cpu.h>
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#include <cpu_func.h>
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#include <cyclic.h>
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#include <display_options.h>
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#include <dm.h>
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#include <env.h>
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#include <env_internal.h>
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#include <event.h>
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#include <fdtdec.h>
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#include <fs.h>
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#include <hang.h>
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#include <i2c.h>
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#include <init.h>
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#include <initcall.h>
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#include <log.h>
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#include <malloc.h>
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#include <mapmem.h>
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#include <os.h>
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#include <post.h>
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#include <relocate.h>
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#include <serial.h>
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#include <spl.h>
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#include <status_led.h>
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#include <sysreset.h>
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#include <timer.h>
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#include <trace.h>
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#include <video.h>
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#include <watchdog.h>
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#include <asm/cache.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <asm/sections.h>
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#include <dm/root.h>
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#include <linux/errno.h>
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#include <linux/log2.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* TODO(sjg@chromium.org): IMO this code should be
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* refactored to a single function, something like:
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*
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* void led_set_state(enum led_colour_t colour, int on);
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*/
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/************************************************************************
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* Coloured LED functionality
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************************************************************************
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* May be supplied by boards if desired
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*/
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__weak void coloured_LED_init(void) {}
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__weak void red_led_on(void) {}
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__weak void red_led_off(void) {}
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__weak void green_led_on(void) {}
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__weak void green_led_off(void) {}
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__weak void yellow_led_on(void) {}
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__weak void yellow_led_off(void) {}
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__weak void blue_led_on(void) {}
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__weak void blue_led_off(void) {}
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/*
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* Why is gd allocated a register? Prior to reloc it might be better to
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* just pass it around to each function in this file?
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*
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* After reloc one could argue that it is hardly used and doesn't need
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* to be in a register. Or if it is it should perhaps hold pointers to all
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* global data for all modules, so that post-reloc we can avoid the massive
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* literal pool we get on ARM. Or perhaps just encourage each module to use
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* a structure...
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*/
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#if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
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static int init_func_watchdog_init(void)
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{
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# if defined(CONFIG_HW_WATCHDOG) && \
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(defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
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defined(CONFIG_SH) || \
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defined(CONFIG_DESIGNWARE_WATCHDOG) || \
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defined(CONFIG_IMX_WATCHDOG))
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hw_watchdog_init();
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puts(" Watchdog enabled\n");
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# endif
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schedule();
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return 0;
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}
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int init_func_watchdog_reset(void)
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{
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schedule();
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return 0;
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}
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#endif /* CONFIG_WATCHDOG */
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__weak void board_add_ram_info(int use_default)
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{
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/* please define platform specific board_add_ram_info() */
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}
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static int init_baud_rate(void)
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{
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gd->baudrate = env_get_ulong("baudrate", 10, CONFIG_BAUDRATE);
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return 0;
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}
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static int display_text_info(void)
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{
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#if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
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ulong bss_start, bss_end, text_base;
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bss_start = (ulong)&__bss_start;
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bss_end = (ulong)&__bss_end;
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#ifdef CONFIG_TEXT_BASE
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text_base = CONFIG_TEXT_BASE;
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#else
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text_base = CONFIG_SYS_MONITOR_BASE;
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#endif
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debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
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text_base, bss_start, bss_end);
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#endif
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return 0;
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}
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#ifdef CONFIG_SYSRESET
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static int print_resetinfo(void)
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{
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struct udevice *dev;
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char status[256];
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bool status_printed = false;
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int ret;
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/* Not all boards have sysreset drivers available during early
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* boot, so don't fail if one can't be found.
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*/
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for (ret = uclass_first_device_check(UCLASS_SYSRESET, &dev); dev;
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ret = uclass_next_device_check(&dev)) {
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if (ret) {
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debug("%s: %s sysreset device (error: %d)\n",
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__func__, dev->name, ret);
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continue;
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}
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if (!sysreset_get_status(dev, status, sizeof(status))) {
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printf("%s%s", status_printed ? " " : "", status);
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status_printed = true;
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}
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}
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if (status_printed)
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printf("\n");
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return 0;
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}
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#endif
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#if defined(CONFIG_DISPLAY_CPUINFO) && CONFIG_IS_ENABLED(CPU)
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static int print_cpuinfo(void)
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{
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struct udevice *dev;
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char desc[512];
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int ret;
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dev = cpu_get_current_dev();
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if (!dev) {
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debug("%s: Could not get CPU device\n",
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__func__);
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return -ENODEV;
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}
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ret = cpu_get_desc(dev, desc, sizeof(desc));
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if (ret) {
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debug("%s: Could not get CPU description (err = %d)\n",
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dev->name, ret);
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return ret;
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}
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printf("CPU: %s\n", desc);
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return 0;
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}
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#endif
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static int announce_dram_init(void)
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{
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puts("DRAM: ");
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return 0;
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}
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/*
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* From input size calculate its nearest rounded unit scale (multiply of 2^10)
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* and value in calculated unit scale multiplied by 10 (as fractional fixed
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* point number with one decimal digit), which is human natural format,
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* same what uses print_size() function for displaying. Mathematically it is:
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* round_nearest(val * 2^scale) = size * 10; where: 10 <= val < 10240.
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*
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* For example for size=87654321 we calculate scale=20 and val=836 which means
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* that input has natural human format 83.6 M (mega = 2^20).
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*/
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#define compute_size_scale_val(size, scale, val) do { \
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scale = ilog2(size) / 10 * 10; \
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val = (10 * size + ((1ULL << scale) >> 1)) >> scale; \
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if (val == 10240) { val = 10; scale += 10; } \
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} while (0)
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/*
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* Check if the sizes in their natural units written in decimal format with
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* one fraction number are same.
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*/
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static int sizes_near(unsigned long long size1, unsigned long long size2)
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{
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unsigned int size1_scale, size1_val, size2_scale, size2_val;
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compute_size_scale_val(size1, size1_scale, size1_val);
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compute_size_scale_val(size2, size2_scale, size2_val);
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return size1_scale == size2_scale && size1_val == size2_val;
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}
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static int show_dram_config(void)
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{
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unsigned long long size;
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int i;
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debug("\nRAM Configuration:\n");
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for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
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size += gd->bd->bi_dram[i].size;
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debug("Bank #%d: %llx ", i,
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(unsigned long long)(gd->bd->bi_dram[i].start));
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#ifdef DEBUG
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print_size(gd->bd->bi_dram[i].size, "\n");
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#endif
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}
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debug("\nDRAM: ");
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print_size(gd->ram_size, "");
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if (!sizes_near(gd->ram_size, size)) {
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printf(" (effective ");
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print_size(size, ")");
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}
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board_add_ram_info(0);
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putc('\n');
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return 0;
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}
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__weak int dram_init_banksize(void)
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{
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gd->bd->bi_dram[0].start = gd->ram_base;
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gd->bd->bi_dram[0].size = get_effective_memsize();
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return 0;
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}
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#if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
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static int init_func_i2c(void)
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{
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puts("I2C: ");
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i2c_init_all();
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puts("ready\n");
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return 0;
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}
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#endif
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#if defined(CONFIG_VID)
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__weak int init_func_vid(void)
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{
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return 0;
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}
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#endif
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static int setup_mon_len(void)
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{
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#if defined(__ARM__) || defined(__MICROBLAZE__)
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gd->mon_len = (ulong)&__bss_end - (ulong)_start;
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#elif defined(CONFIG_SANDBOX) && !defined(__riscv)
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gd->mon_len = (ulong)&_end - (ulong)_init;
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#elif defined(CONFIG_SANDBOX)
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/* gcc does not provide _init in crti.o on RISC-V */
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gd->mon_len = 0;
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#elif defined(CONFIG_EFI_APP)
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gd->mon_len = (ulong)&_end - (ulong)_init;
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#elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
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gd->mon_len = CONFIG_SYS_MONITOR_LEN;
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#elif defined(CONFIG_SH) || defined(CONFIG_RISCV)
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gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
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#elif defined(CONFIG_SYS_MONITOR_BASE)
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/* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
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gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
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#endif
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return 0;
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}
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static int setup_spl_handoff(void)
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{
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#if CONFIG_IS_ENABLED(HANDOFF)
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gd->spl_handoff = bloblist_find(BLOBLISTT_U_BOOT_SPL_HANDOFF,
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sizeof(struct spl_handoff));
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debug("Found SPL hand-off info %p\n", gd->spl_handoff);
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#endif
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return 0;
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}
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__weak int arch_cpu_init(void)
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{
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return 0;
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}
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__weak int mach_cpu_init(void)
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{
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return 0;
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}
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/* Get the top of usable RAM */
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__weak phys_size_t board_get_usable_ram_top(phys_size_t total_size)
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{
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#if defined(CFG_SYS_SDRAM_BASE) && CFG_SYS_SDRAM_BASE > 0
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/*
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* Detect whether we have so much RAM that it goes past the end of our
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* 32-bit address space. If so, clip the usable RAM so it doesn't.
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*/
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if (gd->ram_top < CFG_SYS_SDRAM_BASE)
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/*
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* Will wrap back to top of 32-bit space when reservations
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* are made.
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*/
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return 0;
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#endif
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return gd->ram_top;
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}
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__weak int arch_setup_dest_addr(void)
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{
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return 0;
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}
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static int setup_dest_addr(void)
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{
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debug("Monitor len: %08lX\n", gd->mon_len);
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/*
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* Ram is setup, size stored in gd !!
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*/
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debug("Ram size: %08llX\n", (unsigned long long)gd->ram_size);
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#if CONFIG_VAL(SYS_MEM_TOP_HIDE)
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/*
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* Subtract specified amount of memory to hide so that it won't
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* get "touched" at all by U-Boot. By fixing up gd->ram_size
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* the Linux kernel should now get passed the now "corrected"
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* memory size and won't touch it either. This should work
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* for arch/ppc and arch/powerpc. Only Linux board ports in
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* arch/powerpc with bootwrapper support, that recalculate the
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* memory size from the SDRAM controller setup will have to
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* get fixed.
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*/
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gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
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#endif
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#ifdef CFG_SYS_SDRAM_BASE
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gd->ram_base = CFG_SYS_SDRAM_BASE;
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#endif
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gd->ram_top = gd->ram_base + get_effective_memsize();
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gd->ram_top = board_get_usable_ram_top(gd->mon_len);
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gd->relocaddr = gd->ram_top;
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debug("Ram top: %08llX\n", (unsigned long long)gd->ram_top);
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return arch_setup_dest_addr();
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}
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#ifdef CFG_PRAM
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/* reserve protected RAM */
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static int reserve_pram(void)
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{
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ulong reg;
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reg = env_get_ulong("pram", 10, CFG_PRAM);
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gd->relocaddr -= (reg << 10); /* size is in kB */
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debug("Reserving %ldk for protected RAM at %08lx\n", reg,
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gd->relocaddr);
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return 0;
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}
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#endif /* CFG_PRAM */
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/* Round memory pointer down to next 4 kB limit */
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static int reserve_round_4k(void)
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{
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gd->relocaddr &= ~(4096 - 1);
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return 0;
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}
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__weak int arch_reserve_mmu(void)
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{
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return 0;
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}
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static int reserve_video(void)
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{
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if (IS_ENABLED(CONFIG_VIDEO)) {
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ulong addr;
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int ret;
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addr = gd->relocaddr;
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ret = video_reserve(&addr);
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if (ret)
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return ret;
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debug("Reserving %luk for video at: %08lx\n",
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((unsigned long)gd->relocaddr - addr) >> 10, addr);
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gd->relocaddr = addr;
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}
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return 0;
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}
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static int reserve_trace(void)
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{
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#ifdef CONFIG_TRACE
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gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
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gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
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debug("Reserving %luk for trace data at: %08lx\n",
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(unsigned long)CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
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#endif
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return 0;
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}
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static int reserve_uboot(void)
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{
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if (!(gd->flags & GD_FLG_SKIP_RELOC)) {
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/*
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* reserve memory for U-Boot code, data & bss
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* round down to next 4 kB limit
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*/
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gd->relocaddr -= gd->mon_len;
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gd->relocaddr &= ~(4096 - 1);
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#if defined(CONFIG_E500) || defined(CONFIG_MIPS)
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/* round down to next 64 kB limit so that IVPR stays aligned */
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gd->relocaddr &= ~(65536 - 1);
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#endif
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debug("Reserving %ldk for U-Boot at: %08lx\n",
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gd->mon_len >> 10, gd->relocaddr);
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}
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gd->start_addr_sp = gd->relocaddr;
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return 0;
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}
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/*
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* reserve after start_addr_sp the requested size and make the stack pointer
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* 16-byte aligned, this alignment is needed for cast on the reserved memory
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* ref = x86_64 ABI: https://reviews.llvm.org/D30049: 16 bytes
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* = ARMv8 Instruction Set Overview: quad word, 16 bytes
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*/
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static unsigned long reserve_stack_aligned(size_t size)
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{
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return ALIGN_DOWN(gd->start_addr_sp - size, 16);
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}
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#ifdef CONFIG_SYS_NONCACHED_MEMORY
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static int reserve_noncached(void)
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{
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/*
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* The value of gd->start_addr_sp must match the value of malloc_start
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* calculated in board_r.c:initr_malloc(), which is passed to
|
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* dlmalloc.c:mem_malloc_init() and then used by
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* cache.c:noncached_init()
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*
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* These calculations must match the code in cache.c:noncached_init()
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*/
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gd->start_addr_sp = ALIGN(gd->start_addr_sp, MMU_SECTION_SIZE) -
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MMU_SECTION_SIZE;
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gd->start_addr_sp -= ALIGN(CONFIG_SYS_NONCACHED_MEMORY,
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MMU_SECTION_SIZE);
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debug("Reserving %dM for noncached_alloc() at: %08lx\n",
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CONFIG_SYS_NONCACHED_MEMORY >> 20, gd->start_addr_sp);
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return 0;
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}
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#endif
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/* reserve memory for malloc() area */
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static int reserve_malloc(void)
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{
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gd->start_addr_sp = reserve_stack_aligned(TOTAL_MALLOC_LEN);
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debug("Reserving %dk for malloc() at: %08lx\n",
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TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
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#ifdef CONFIG_SYS_NONCACHED_MEMORY
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reserve_noncached();
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#endif
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return 0;
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}
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|
|
|
/* (permanently) allocate a Board Info struct */
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|
static int reserve_board(void)
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|
{
|
|
if (!gd->bd) {
|
|
gd->start_addr_sp = reserve_stack_aligned(sizeof(struct bd_info));
|
|
gd->bd = (struct bd_info *)map_sysmem(gd->start_addr_sp,
|
|
sizeof(struct bd_info));
|
|
memset(gd->bd, '\0', sizeof(struct bd_info));
|
|
debug("Reserving %zu Bytes for Board Info at: %08lx\n",
|
|
sizeof(struct bd_info), gd->start_addr_sp);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int reserve_global_data(void)
|
|
{
|
|
gd->start_addr_sp = reserve_stack_aligned(sizeof(gd_t));
|
|
gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
|
|
debug("Reserving %zu Bytes for Global Data at: %08lx\n",
|
|
sizeof(gd_t), gd->start_addr_sp);
|
|
return 0;
|
|
}
|
|
|
|
static int reserve_fdt(void)
|
|
{
|
|
if (!IS_ENABLED(CONFIG_OF_EMBED)) {
|
|
/*
|
|
* If the device tree is sitting immediately above our image
|
|
* then we must relocate it. If it is embedded in the data
|
|
* section, then it will be relocated with other data.
|
|
*/
|
|
if (gd->fdt_blob) {
|
|
gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob), 32);
|
|
|
|
gd->start_addr_sp = reserve_stack_aligned(gd->fdt_size);
|
|
gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
|
|
debug("Reserving %lu Bytes for FDT at: %08lx\n",
|
|
gd->fdt_size, gd->start_addr_sp);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int reserve_bootstage(void)
|
|
{
|
|
#ifdef CONFIG_BOOTSTAGE
|
|
int size = bootstage_get_size();
|
|
|
|
gd->start_addr_sp = reserve_stack_aligned(size);
|
|
gd->new_bootstage = map_sysmem(gd->start_addr_sp, size);
|
|
debug("Reserving %#x Bytes for bootstage at: %08lx\n", size,
|
|
gd->start_addr_sp);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
__weak int arch_reserve_stacks(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int reserve_stacks(void)
|
|
{
|
|
/* make stack pointer 16-byte aligned */
|
|
gd->start_addr_sp = reserve_stack_aligned(16);
|
|
|
|
/*
|
|
* let the architecture-specific code tailor gd->start_addr_sp and
|
|
* gd->irq_sp
|
|
*/
|
|
return arch_reserve_stacks();
|
|
}
|
|
|
|
static int reserve_bloblist(void)
|
|
{
|
|
#ifdef CONFIG_BLOBLIST
|
|
/* Align to a 4KB boundary for easier reading of addresses */
|
|
gd->start_addr_sp = ALIGN_DOWN(gd->start_addr_sp -
|
|
CONFIG_BLOBLIST_SIZE_RELOC, 0x1000);
|
|
gd->new_bloblist = map_sysmem(gd->start_addr_sp,
|
|
CONFIG_BLOBLIST_SIZE_RELOC);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int display_new_sp(void)
|
|
{
|
|
debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
__weak int arch_setup_bdinfo(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int setup_bdinfo(void)
|
|
{
|
|
struct bd_info *bd = gd->bd;
|
|
|
|
if (IS_ENABLED(CONFIG_SYS_HAS_SRAM)) {
|
|
bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
|
|
bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
|
|
}
|
|
|
|
return arch_setup_bdinfo();
|
|
}
|
|
|
|
#ifdef CONFIG_POST
|
|
static int init_post(void)
|
|
{
|
|
post_bootmode_init();
|
|
post_run(NULL, POST_ROM | post_bootmode_get(0));
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int reloc_fdt(void)
|
|
{
|
|
if (!IS_ENABLED(CONFIG_OF_EMBED)) {
|
|
if (gd->flags & GD_FLG_SKIP_RELOC)
|
|
return 0;
|
|
if (gd->new_fdt) {
|
|
memcpy(gd->new_fdt, gd->fdt_blob,
|
|
fdt_totalsize(gd->fdt_blob));
|
|
gd->fdt_blob = gd->new_fdt;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int reloc_bootstage(void)
|
|
{
|
|
#ifdef CONFIG_BOOTSTAGE
|
|
if (gd->flags & GD_FLG_SKIP_RELOC)
|
|
return 0;
|
|
if (gd->new_bootstage) {
|
|
int size = bootstage_get_size();
|
|
|
|
debug("Copying bootstage from %p to %p, size %x\n",
|
|
gd->bootstage, gd->new_bootstage, size);
|
|
memcpy(gd->new_bootstage, gd->bootstage, size);
|
|
gd->bootstage = gd->new_bootstage;
|
|
bootstage_relocate();
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int reloc_bloblist(void)
|
|
{
|
|
#ifdef CONFIG_BLOBLIST
|
|
/*
|
|
* Relocate only if we are supposed to send it
|
|
*/
|
|
if ((gd->flags & GD_FLG_SKIP_RELOC) &&
|
|
CONFIG_BLOBLIST_SIZE == CONFIG_BLOBLIST_SIZE_RELOC) {
|
|
debug("Not relocating bloblist\n");
|
|
return 0;
|
|
}
|
|
if (gd->new_bloblist) {
|
|
int size = CONFIG_BLOBLIST_SIZE;
|
|
|
|
debug("Copying bloblist from %p to %p, size %x\n",
|
|
gd->bloblist, gd->new_bloblist, size);
|
|
bloblist_reloc(gd->new_bloblist, CONFIG_BLOBLIST_SIZE_RELOC,
|
|
gd->bloblist, size);
|
|
gd->bloblist = gd->new_bloblist;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int setup_reloc(void)
|
|
{
|
|
if (!(gd->flags & GD_FLG_SKIP_RELOC)) {
|
|
#ifdef CONFIG_TEXT_BASE
|
|
#ifdef ARM
|
|
gd->reloc_off = gd->relocaddr - (unsigned long)__image_copy_start;
|
|
#elif defined(CONFIG_MICROBLAZE)
|
|
gd->reloc_off = gd->relocaddr - (u32)_start;
|
|
#elif defined(CONFIG_M68K)
|
|
/*
|
|
* On all ColdFire arch cpu, monitor code starts always
|
|
* just after the default vector table location, so at 0x400
|
|
*/
|
|
gd->reloc_off = gd->relocaddr - (CONFIG_TEXT_BASE + 0x400);
|
|
#elif !defined(CONFIG_SANDBOX)
|
|
gd->reloc_off = gd->relocaddr - CONFIG_TEXT_BASE;
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
|
|
|
|
if (gd->flags & GD_FLG_SKIP_RELOC) {
|
|
debug("Skipping relocation due to flag\n");
|
|
} else {
|
|
debug("Relocation Offset is: %08lx\n", gd->reloc_off);
|
|
debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
|
|
gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
|
|
gd->start_addr_sp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_OF_BOARD_FIXUP
|
|
static int fix_fdt(void)
|
|
{
|
|
return board_fix_fdt((void *)gd->fdt_blob);
|
|
}
|
|
#endif
|
|
|
|
/* ARM calls relocate_code from its crt0.S */
|
|
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
|
|
!CONFIG_IS_ENABLED(X86_64)
|
|
|
|
static int jump_to_copy(void)
|
|
{
|
|
if (gd->flags & GD_FLG_SKIP_RELOC)
|
|
return 0;
|
|
/*
|
|
* x86 is special, but in a nice way. It uses a trampoline which
|
|
* enables the dcache if possible.
|
|
*
|
|
* For now, other archs use relocate_code(), which is implemented
|
|
* similarly for all archs. When we do generic relocation, hopefully
|
|
* we can make all archs enable the dcache prior to relocation.
|
|
*/
|
|
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
|
|
/*
|
|
* SDRAM and console are now initialised. The final stack can now
|
|
* be setup in SDRAM. Code execution will continue in Flash, but
|
|
* with the stack in SDRAM and Global Data in temporary memory
|
|
* (CPU cache)
|
|
*/
|
|
arch_setup_gd(gd->new_gd);
|
|
board_init_f_r_trampoline(gd->start_addr_sp);
|
|
#else
|
|
relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* Record the board_init_f() bootstage (after arch_cpu_init()) */
|
|
static int initf_bootstage(void)
|
|
{
|
|
bool from_spl = IS_ENABLED(CONFIG_SPL_BOOTSTAGE) &&
|
|
IS_ENABLED(CONFIG_BOOTSTAGE_STASH);
|
|
int ret;
|
|
|
|
ret = bootstage_init(!from_spl);
|
|
if (ret)
|
|
return ret;
|
|
if (from_spl) {
|
|
const void *stash = map_sysmem(CONFIG_BOOTSTAGE_STASH_ADDR,
|
|
CONFIG_BOOTSTAGE_STASH_SIZE);
|
|
|
|
ret = bootstage_unstash(stash, CONFIG_BOOTSTAGE_STASH_SIZE);
|
|
if (ret && ret != -ENOENT) {
|
|
debug("Failed to unstash bootstage: err=%d\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int initf_dm(void)
|
|
{
|
|
#if defined(CONFIG_DM) && CONFIG_VAL(SYS_MALLOC_F_LEN)
|
|
int ret;
|
|
|
|
bootstage_start(BOOTSTAGE_ID_ACCUM_DM_F, "dm_f");
|
|
ret = dm_init_and_scan(true);
|
|
bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_F);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
|
|
ret = dm_timer_init();
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Architecture-specific memory reservation */
|
|
__weak int reserve_arch(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
__weak int checkcpu(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
__weak int clear_bss(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int misc_init_f(void)
|
|
{
|
|
return event_notify_null(EVT_MISC_INIT_F);
|
|
}
|
|
|
|
static const init_fnc_t init_sequence_f[] = {
|
|
setup_mon_len,
|
|
#ifdef CONFIG_OF_CONTROL
|
|
fdtdec_setup,
|
|
#endif
|
|
#ifdef CONFIG_TRACE_EARLY
|
|
trace_early_init,
|
|
#endif
|
|
initf_malloc,
|
|
log_init,
|
|
initf_bootstage, /* uses its own timer, so does not need DM */
|
|
event_init,
|
|
#ifdef CONFIG_BLOBLIST
|
|
bloblist_init,
|
|
#endif
|
|
setup_spl_handoff,
|
|
#if defined(CONFIG_CONSOLE_RECORD_INIT_F)
|
|
console_record_init,
|
|
#endif
|
|
#if defined(CONFIG_HAVE_FSP)
|
|
arch_fsp_init,
|
|
#endif
|
|
arch_cpu_init, /* basic arch cpu dependent setup */
|
|
mach_cpu_init, /* SoC/machine dependent CPU setup */
|
|
initf_dm,
|
|
#if defined(CONFIG_BOARD_EARLY_INIT_F)
|
|
board_early_init_f,
|
|
#endif
|
|
#if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
|
|
/* get CPU and bus clocks according to the environment variable */
|
|
get_clocks, /* get CPU and bus clocks (etc.) */
|
|
#endif
|
|
#if !defined(CONFIG_M68K) || (defined(CONFIG_M68K) && !defined(CONFIG_MCFTMR))
|
|
timer_init, /* initialize timer */
|
|
#endif
|
|
#if defined(CONFIG_BOARD_POSTCLK_INIT)
|
|
board_postclk_init,
|
|
#endif
|
|
env_init, /* initialize environment */
|
|
init_baud_rate, /* initialze baudrate settings */
|
|
serial_init, /* serial communications setup */
|
|
console_init_f, /* stage 1 init of console */
|
|
display_options, /* say that we are here */
|
|
display_text_info, /* show debugging info if required */
|
|
checkcpu,
|
|
#if defined(CONFIG_SYSRESET)
|
|
print_resetinfo,
|
|
#endif
|
|
#if defined(CONFIG_DISPLAY_CPUINFO)
|
|
print_cpuinfo, /* display cpu info (and speed) */
|
|
#endif
|
|
#if defined(CONFIG_DTB_RESELECT)
|
|
embedded_dtb_select,
|
|
#endif
|
|
#if defined(CONFIG_DISPLAY_BOARDINFO)
|
|
show_board_info,
|
|
#endif
|
|
INIT_FUNC_WATCHDOG_INIT
|
|
misc_init_f,
|
|
INIT_FUNC_WATCHDOG_RESET
|
|
#if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
|
|
init_func_i2c,
|
|
#endif
|
|
#if defined(CONFIG_VID) && !defined(CONFIG_SPL)
|
|
init_func_vid,
|
|
#endif
|
|
announce_dram_init,
|
|
dram_init, /* configure available RAM banks */
|
|
#ifdef CONFIG_POST
|
|
post_init_f,
|
|
#endif
|
|
INIT_FUNC_WATCHDOG_RESET
|
|
#if defined(CFG_SYS_DRAM_TEST)
|
|
testdram,
|
|
#endif /* CFG_SYS_DRAM_TEST */
|
|
INIT_FUNC_WATCHDOG_RESET
|
|
|
|
#ifdef CONFIG_POST
|
|
init_post,
|
|
#endif
|
|
INIT_FUNC_WATCHDOG_RESET
|
|
/*
|
|
* Now that we have DRAM mapped and working, we can
|
|
* relocate the code and continue running from DRAM.
|
|
*
|
|
* Reserve memory at end of RAM for (top down in that order):
|
|
* - area that won't get touched by U-Boot and Linux (optional)
|
|
* - kernel log buffer
|
|
* - protected RAM
|
|
* - LCD framebuffer
|
|
* - monitor code
|
|
* - board info struct
|
|
*/
|
|
setup_dest_addr,
|
|
#ifdef CONFIG_OF_BOARD_FIXUP
|
|
fix_fdt,
|
|
#endif
|
|
#ifdef CFG_PRAM
|
|
reserve_pram,
|
|
#endif
|
|
reserve_round_4k,
|
|
arch_reserve_mmu,
|
|
reserve_video,
|
|
reserve_trace,
|
|
reserve_uboot,
|
|
reserve_malloc,
|
|
reserve_board,
|
|
reserve_global_data,
|
|
reserve_fdt,
|
|
reserve_bootstage,
|
|
reserve_bloblist,
|
|
reserve_arch,
|
|
reserve_stacks,
|
|
dram_init_banksize,
|
|
show_dram_config,
|
|
INIT_FUNC_WATCHDOG_RESET
|
|
setup_bdinfo,
|
|
display_new_sp,
|
|
INIT_FUNC_WATCHDOG_RESET
|
|
reloc_fdt,
|
|
reloc_bootstage,
|
|
reloc_bloblist,
|
|
setup_reloc,
|
|
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
|
|
copy_uboot_to_ram,
|
|
do_elf_reloc_fixups,
|
|
#endif
|
|
clear_bss,
|
|
/*
|
|
* Deregister all cyclic functions before relocation, so that
|
|
* gd->cyclic_list does not contain any references to pre-relocation
|
|
* devices. Drivers will register their cyclic functions anew when the
|
|
* devices are probed again.
|
|
*
|
|
* This should happen as late as possible so that the window where a
|
|
* watchdog device is not serviced is as small as possible.
|
|
*/
|
|
cyclic_unregister_all,
|
|
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
|
|
!CONFIG_IS_ENABLED(X86_64)
|
|
jump_to_copy,
|
|
#endif
|
|
NULL,
|
|
};
|
|
|
|
void board_init_f(ulong boot_flags)
|
|
{
|
|
gd->flags = boot_flags;
|
|
gd->have_console = 0;
|
|
|
|
if (initcall_run_list(init_sequence_f))
|
|
hang();
|
|
|
|
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
|
|
!defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64) && \
|
|
!defined(CONFIG_ARC)
|
|
/* NOTREACHED - jump_to_copy() does not return */
|
|
hang();
|
|
#endif
|
|
}
|
|
|
|
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
|
|
/*
|
|
* For now this code is only used on x86.
|
|
*
|
|
* init_sequence_f_r is the list of init functions which are run when
|
|
* U-Boot is executing from Flash with a semi-limited 'C' environment.
|
|
* The following limitations must be considered when implementing an
|
|
* '_f_r' function:
|
|
* - 'static' variables are read-only
|
|
* - Global Data (gd->xxx) is read/write
|
|
*
|
|
* The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
|
|
* supported). It _should_, if possible, copy global data to RAM and
|
|
* initialise the CPU caches (to speed up the relocation process)
|
|
*
|
|
* NOTE: At present only x86 uses this route, but it is intended that
|
|
* all archs will move to this when generic relocation is implemented.
|
|
*/
|
|
static const init_fnc_t init_sequence_f_r[] = {
|
|
#if !CONFIG_IS_ENABLED(X86_64)
|
|
init_cache_f_r,
|
|
#endif
|
|
|
|
NULL,
|
|
};
|
|
|
|
void board_init_f_r(void)
|
|
{
|
|
if (initcall_run_list(init_sequence_f_r))
|
|
hang();
|
|
|
|
/*
|
|
* The pre-relocation drivers may be using memory that has now gone
|
|
* away. Mark serial as unavailable - this will fall back to the debug
|
|
* UART if available.
|
|
*
|
|
* Do the same with log drivers since the memory may not be available.
|
|
*/
|
|
gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY);
|
|
#ifdef CONFIG_TIMER
|
|
gd->timer = NULL;
|
|
#endif
|
|
|
|
/*
|
|
* U-Boot has been copied into SDRAM, the BSS has been cleared etc.
|
|
* Transfer execution from Flash to RAM by calculating the address
|
|
* of the in-RAM copy of board_init_r() and calling it
|
|
*/
|
|
(board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
|
|
|
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/* NOTREACHED - board_init_r() does not return */
|
|
hang();
|
|
}
|
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#endif /* CONFIG_X86 */
|