mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-15 09:27:35 +00:00
e7fb789612
OF_HOSTFILE is used on sandbox configs only. Although it's pretty unique and not causing any confusions, we are better of having simpler config options for the DTB. So let's replace that with the existing OF_BOARD. U-Boot would then have only three config options for the DTB origin. - OF_SEPARATE, build separately from U-Boot - OF_BOARD, board specific way of providing the DTB - OF_EMBED embedded in the u-boot binary(should not be used in production Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Reviewed-by: Simon Glass <sjg@chromium.org>
139 lines
3.1 KiB
C
139 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2018 Cisco Systems, Inc.
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* (C) Copyright 2019 Synamedia
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*
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* Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
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*/
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#include <cpu_func.h>
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#include <init.h>
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#include <log.h>
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#include <time.h>
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#include <asm/global_data.h>
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#include <linux/types.h>
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#include <common.h>
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#include <env.h>
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#include <asm/io.h>
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#include <asm/bootm.h>
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#include <mach/timer.h>
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#include <mmc.h>
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#include <fdtdec.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define BCMSTB_DATA_SECTION __section(".data")
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struct bcmstb_boot_parameters bcmstb_boot_parameters BCMSTB_DATA_SECTION;
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phys_addr_t prior_stage_fdt_address BCMSTB_DATA_SECTION;
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union reg_value_union {
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const char *data;
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const phys_addr_t *address;
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};
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int board_init(void)
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{
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return 0;
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}
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void reset_cpu(void)
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{
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}
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int print_cpuinfo(void)
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{
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return 0;
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}
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int dram_init(void)
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{
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if (fdtdec_setup_mem_size_base() != 0)
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return -EINVAL;
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return 0;
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}
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int dram_init_banksize(void)
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{
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fdtdec_setup_memory_banksize();
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/*
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* On this SoC, U-Boot is running as an ELF file. Change the
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* relocation address to CONFIG_SYS_TEXT_BASE, so that in
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* setup_reloc, gd->reloc_off works out to 0, effectively
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* disabling relocation. Otherwise U-Boot hangs in the setup
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* instructions just before relocate_code in
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* arch/arm/lib/crt0.S.
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*/
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gd->relocaddr = CONFIG_SYS_TEXT_BASE;
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return 0;
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}
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void enable_caches(void)
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{
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/*
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* This port assumes that the prior stage bootloader has
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* enabled I-cache and D-cache already. Implementing this
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* function silences the warning in the default function.
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*/
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}
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int timer_init(void)
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{
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gd->arch.timer_rate_hz = readl(BCMSTB_TIMER_FREQUENCY);
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return 0;
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}
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ulong get_tbclk(void)
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{
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return gd->arch.timer_rate_hz;
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}
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uint64_t get_ticks(void)
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{
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gd->timebase_h = readl(BCMSTB_TIMER_HIGH);
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gd->timebase_l = readl(BCMSTB_TIMER_LOW);
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return ((uint64_t)gd->timebase_h << 32) | gd->timebase_l;
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}
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int board_late_init(void)
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{
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debug("Arguments from prior stage bootloader:\n");
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debug("General Purpose Register 0: 0x%x\n", bcmstb_boot_parameters.r0);
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debug("General Purpose Register 1: 0x%x\n", bcmstb_boot_parameters.r1);
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debug("General Purpose Register 2: 0x%x\n", bcmstb_boot_parameters.r2);
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debug("General Purpose Register 3: 0x%x\n", bcmstb_boot_parameters.r3);
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debug("Stack Pointer Register: 0x%x\n", bcmstb_boot_parameters.sp);
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debug("Link Register: 0x%x\n", bcmstb_boot_parameters.lr);
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debug("Assuming timer frequency register at: 0x%p\n",
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(void *)BCMSTB_TIMER_FREQUENCY);
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debug("Read timer frequency (in Hz): %ld\n", gd->arch.timer_rate_hz);
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debug("Prior stage provided DTB at: 0x%p\n",
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(void *)prior_stage_fdt_address);
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/*
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* Set fdtcontroladdr in the environment so that scripts can
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* refer to it, for example, to reuse it for fdtaddr.
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*/
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env_set_hex("fdtcontroladdr", prior_stage_fdt_address);
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/*
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* Do not set machid to the machine identifier value provided
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* by the prior stage bootloader (bcmstb_boot_parameters.r1)
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* because we're using a device tree to boot Linux.
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*/
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return 0;
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}
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void *board_fdt_blob_setup(int *err)
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{
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*err = 0;
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/* Stored the DTB address there during our init */
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return (void *)prior_stage_fdt_address;
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}
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