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https://github.com/brain-hackers/u-boot-brain
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7dbe63bc95
We use the switch CONFIG_SUPPORT_EMMC_BOOT today to enable some additional features of the eMMC boot partitions. Add support for being told that we have booted from one of these partitions to the spl framework and implement this on TI OMAP/related. Cc: Pantelis Antoniou <panto@antoniou-consulting.com> Signed-off-by: Tom Rini <trini@ti.com> Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*
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* boot-common.c
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*
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* Common bootmode functions for omap based boards
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*
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* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <spl.h>
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#include <asm/omap_common.h>
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#include <asm/arch/omap.h>
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#include <asm/arch/mmc_host_def.h>
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#include <asm/arch/sys_proto.h>
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#include <watchdog.h>
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DECLARE_GLOBAL_DATA_PTR;
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void save_omap_boot_params(void)
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{
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u32 rom_params = *((u32 *)OMAP_SRAM_SCRATCH_BOOT_PARAMS);
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u8 boot_device;
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u32 dev_desc, dev_data;
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if ((rom_params < NON_SECURE_SRAM_START) ||
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(rom_params > NON_SECURE_SRAM_END))
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return;
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/*
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* rom_params can be type casted to omap_boot_parameters and
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* used. But it not correct to assume that romcode structure
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* encoding would be same as u-boot. So use the defined offsets.
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*/
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gd->arch.omap_boot_params.omap_bootdevice = boot_device =
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*((u8 *)(rom_params + BOOT_DEVICE_OFFSET));
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gd->arch.omap_boot_params.ch_flags =
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*((u8 *)(rom_params + CH_FLAGS_OFFSET));
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if ((boot_device >= MMC_BOOT_DEVICES_START) &&
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(boot_device <= MMC_BOOT_DEVICES_END)) {
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#if !defined(CONFIG_AM33XX) && !defined(CONFIG_TI81XX) && \
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!defined(CONFIG_AM43XX)
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if ((omap_hw_init_context() ==
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OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL)) {
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gd->arch.omap_boot_params.omap_bootmode =
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*((u8 *)(rom_params + BOOT_MODE_OFFSET));
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} else
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#endif
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{
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dev_desc = *((u32 *)(rom_params + DEV_DESC_PTR_OFFSET));
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dev_data = *((u32 *)(dev_desc + DEV_DATA_PTR_OFFSET));
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gd->arch.omap_boot_params.omap_bootmode =
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*((u32 *)(dev_data + BOOT_MODE_OFFSET));
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}
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}
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}
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#ifdef CONFIG_SPL_BUILD
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u32 spl_boot_device(void)
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{
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return (u32) (gd->arch.omap_boot_params.omap_bootdevice);
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}
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u32 spl_boot_mode(void)
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{
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u32 val = gd->arch.omap_boot_params.omap_bootmode;
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if (val == MMCSD_MODE_RAW)
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return MMCSD_MODE_RAW;
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else if (val == MMCSD_MODE_FAT)
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return MMCSD_MODE_FAT;
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else
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#ifdef CONFIG_SUPPORT_EMMC_BOOT
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return MMCSD_MODE_EMMCBOOT;
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#else
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return MMCSD_MODE_UNDEFINED;
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#endif
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}
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void spl_board_init(void)
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{
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#ifdef CONFIG_SPL_NAND_SUPPORT
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gpmc_init();
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#endif
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#if defined(CONFIG_AM33XX) && defined(CONFIG_SPL_MUSB_NEW_SUPPORT)
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arch_misc_init();
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#endif
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#if defined(CONFIG_HW_WATCHDOG)
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hw_watchdog_init();
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#endif
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#ifdef CONFIG_AM33XX
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am33xx_spl_board_init();
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#endif
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}
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int board_mmc_init(bd_t *bis)
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{
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switch (spl_boot_device()) {
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case BOOT_DEVICE_MMC1:
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omap_mmc_init(0, 0, 0, -1, -1);
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break;
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case BOOT_DEVICE_MMC2:
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case BOOT_DEVICE_MMC2_2:
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omap_mmc_init(1, 0, 0, -1, -1);
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break;
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}
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return 0;
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}
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void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
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{
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typedef void __noreturn (*image_entry_noargs_t)(u32 *);
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image_entry_noargs_t image_entry =
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(image_entry_noargs_t) spl_image->entry_point;
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debug("image entry point: 0x%X\n", spl_image->entry_point);
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/* Pass the saved boot_params from rom code */
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image_entry((u32 *)&gd->arch.omap_boot_params);
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}
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#endif
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