mirror of
https://github.com/AsahiLinux/u-boot
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539d6e0dbc
The planned new SoC does not have SBC (System Bus Controller) block. Make boot_is_swapped() an optional hook. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
250 lines
6.5 KiB
C
250 lines
6.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015-2017 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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*/
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#include <common.h>
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#include <spl.h>
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#include <stdio.h>
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#include <linux/io.h>
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#include <linux/log2.h>
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#include "../init.h"
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#include "../sbc/sbc-regs.h"
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#include "../sg-regs.h"
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#include "../soc-info.h"
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#include "boot-device.h"
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struct uniphier_boot_device_info {
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unsigned int soc_id;
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unsigned int boot_device_sel_shift;
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const struct uniphier_boot_device *boot_device_table;
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const unsigned int *boot_device_count;
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int (*boot_device_is_usb)(u32 pinmon);
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unsigned int (*boot_device_fixup)(unsigned int mode);
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int (*boot_is_swapped)(void);
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bool have_internal_stm;
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};
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static const struct uniphier_boot_device_info uniphier_boot_device_info[] = {
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#if defined(CONFIG_ARCH_UNIPHIER_LD4)
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{
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.soc_id = UNIPHIER_LD4_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_ld4_boot_device_table,
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.boot_device_count = &uniphier_ld4_boot_device_count,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = true,
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},
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_PRO4)
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{
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.soc_id = UNIPHIER_PRO4_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_ld4_boot_device_table,
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.boot_device_count = &uniphier_ld4_boot_device_count,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = false,
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},
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_SLD8)
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{
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.soc_id = UNIPHIER_SLD8_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_ld4_boot_device_table,
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.boot_device_count = &uniphier_ld4_boot_device_count,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = true,
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},
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_PRO5)
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{
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.soc_id = UNIPHIER_PRO5_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_pro5_boot_device_table,
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.boot_device_count = &uniphier_pro5_boot_device_count,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = false,
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},
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_PXS2)
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{
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.soc_id = UNIPHIER_PXS2_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_pxs2_boot_device_table,
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.boot_device_count = &uniphier_pxs2_boot_device_count,
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.boot_device_is_usb = uniphier_pxs2_boot_device_is_usb,
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.boot_device_fixup = uniphier_pxs2_boot_device_fixup,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = false,
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},
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_LD6B)
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{
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.soc_id = UNIPHIER_LD6B_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_pxs2_boot_device_table,
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.boot_device_count = &uniphier_pxs2_boot_device_count,
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.boot_device_is_usb = uniphier_pxs2_boot_device_is_usb,
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.boot_device_fixup = uniphier_pxs2_boot_device_fixup,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = true, /* STM on A-chip */
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},
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_LD11)
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{
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.soc_id = UNIPHIER_LD11_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_ld11_boot_device_table,
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.boot_device_count = &uniphier_ld11_boot_device_count,
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.boot_device_is_usb = uniphier_ld11_boot_device_is_usb,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = true,
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},
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_LD20)
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{
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.soc_id = UNIPHIER_LD20_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_ld11_boot_device_table,
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.boot_device_count = &uniphier_ld11_boot_device_count,
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.boot_device_is_usb = uniphier_ld20_boot_device_is_usb,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = true,
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},
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#endif
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#if defined(CONFIG_ARCH_UNIPHIER_PXS3)
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{
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.soc_id = UNIPHIER_PXS3_ID,
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.boot_device_sel_shift = 1,
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.boot_device_table = uniphier_pxs3_boot_device_table,
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.boot_device_count = &uniphier_pxs3_boot_device_count,
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.boot_device_is_usb = uniphier_pxs3_boot_device_is_usb,
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.boot_is_swapped = uniphier_sbc_boot_is_swapped,
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.have_internal_stm = false,
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},
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#endif
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};
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UNIPHIER_DEFINE_SOCDATA_FUNC(uniphier_get_boot_device_info,
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uniphier_boot_device_info)
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static unsigned int __uniphier_boot_device_raw(
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const struct uniphier_boot_device_info *info)
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{
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u32 pinmon;
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unsigned int boot_sel;
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if (info->boot_is_swapped && info->boot_is_swapped())
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return BOOT_DEVICE_NOR;
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pinmon = readl(SG_PINMON0);
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if (info->boot_device_is_usb && info->boot_device_is_usb(pinmon))
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return BOOT_DEVICE_USB;
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boot_sel = pinmon >> info->boot_device_sel_shift;
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BUG_ON(!is_power_of_2(*info->boot_device_count));
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boot_sel &= *info->boot_device_count - 1;
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return info->boot_device_table[boot_sel].boot_device;
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}
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unsigned int uniphier_boot_device_raw(void)
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{
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const struct uniphier_boot_device_info *info;
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info = uniphier_get_boot_device_info();
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if (!info) {
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pr_err("unsupported SoC\n");
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return BOOT_DEVICE_NONE;
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}
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return __uniphier_boot_device_raw(info);
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}
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u32 spl_boot_device(void)
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{
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const struct uniphier_boot_device_info *info;
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u32 raw_mode;
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info = uniphier_get_boot_device_info();
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if (!info) {
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pr_err("unsupported SoC\n");
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return BOOT_DEVICE_NONE;
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}
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raw_mode = __uniphier_boot_device_raw(info);
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return info->boot_device_fixup ?
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info->boot_device_fixup(raw_mode) : raw_mode;
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}
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int uniphier_have_internal_stm(void)
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{
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const struct uniphier_boot_device_info *info;
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info = uniphier_get_boot_device_info();
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if (!info) {
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pr_err("unsupported SoC\n");
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return -ENOTSUPP;
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}
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return info->have_internal_stm;
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}
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int uniphier_boot_from_backend(void)
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{
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return !!(readl(SG_PINMON0) & BIT(27));
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}
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#ifndef CONFIG_SPL_BUILD
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static int do_pinmon(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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const struct uniphier_boot_device_info *info;
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u32 pinmon;
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unsigned int boot_device_count, boot_sel;
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int i;
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info = uniphier_get_boot_device_info();
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if (!info) {
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pr_err("unsupported SoC\n");
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return CMD_RET_FAILURE;
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}
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if (uniphier_have_internal_stm())
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printf("STB Micon: %s\n",
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uniphier_boot_from_backend() ? "OFF" : "ON");
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if (info->boot_is_swapped)
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printf("Boot Swap: %s\n",
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info->boot_is_swapped() ? "ON" : "OFF");
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pinmon = readl(SG_PINMON0);
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if (info->boot_device_is_usb)
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printf("USB Boot: %s\n",
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info->boot_device_is_usb(pinmon) ? "ON" : "OFF");
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boot_device_count = *info->boot_device_count;
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boot_sel = pinmon >> info->boot_device_sel_shift;
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boot_sel &= boot_device_count - 1;
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printf("\nBoot Mode Sel:\n");
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for (i = 0; i < boot_device_count; i++)
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printf(" %c %02x %s\n", i == boot_sel ? '*' : ' ', i,
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info->boot_device_table[i].desc);
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return CMD_RET_SUCCESS;
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}
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U_BOOT_CMD(
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pinmon, 1, 1, do_pinmon,
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"pin monitor",
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""
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);
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#endif /* !CONFIG_SPL_BUILD */
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