mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-20 03:33:20 +09:00
57dba04afb
AM642 allows for booting from primary or backup boot media. Both media can be chosen individually based on switch settings. ROM looks for a valid image in primary boot media, if not found then looks in backup boot media. In order to pass this boot media information to boot loader, ROM stores a value at a particular address. Add support for reading this information and determining the boot media correctly. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
127 lines
2.6 KiB
C
127 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* AM642: SoC specific initialization
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*
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* Copyright (C) 2020-2021 Texas Instruments Incorporated - https://www.ti.com/
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* Keerthy <j-keerthy@ti.com>
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* Dave Gerlach <d-gerlach@ti.com>
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*/
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#include <common.h>
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#include <spl.h>
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#include <asm/io.h>
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#include <asm/arch/hardware.h>
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#include "common.h"
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#if defined(CONFIG_SPL_BUILD)
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void board_init_f(ulong dummy)
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{
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#if defined(CONFIG_CPU_V7R)
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setup_k3_mpu_regions();
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#endif
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/* Init DM early */
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spl_early_init();
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preloader_console_init();
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}
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u32 spl_boot_mode(const u32 boot_device)
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{
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switch (boot_device) {
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case BOOT_DEVICE_MMC1:
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return MMCSD_MODE_EMMCBOOT;
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case BOOT_DEVICE_MMC2:
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return MMCSD_MODE_FS;
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default:
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return MMCSD_MODE_RAW;
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}
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}
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static u32 __get_backup_bootmedia(u32 main_devstat)
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{
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u32 bkup_bootmode =
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(main_devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_MASK) >>
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MAIN_DEVSTAT_BACKUP_BOOTMODE_SHIFT;
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u32 bkup_bootmode_cfg =
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(main_devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_MASK) >>
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MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_SHIFT;
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switch (bkup_bootmode) {
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case BACKUP_BOOT_DEVICE_UART:
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return BOOT_DEVICE_UART;
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case BACKUP_BOOT_DEVICE_USB:
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return BOOT_DEVICE_USB;
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case BACKUP_BOOT_DEVICE_ETHERNET:
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return BOOT_DEVICE_ETHERNET;
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case BACKUP_BOOT_DEVICE_MMC:
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if (bkup_bootmode_cfg)
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return BOOT_DEVICE_MMC2;
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return BOOT_DEVICE_MMC1;
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case BACKUP_BOOT_DEVICE_SPI:
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return BOOT_DEVICE_SPI;
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case BACKUP_BOOT_DEVICE_I2C:
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return BOOT_DEVICE_I2C;
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};
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return BOOT_DEVICE_RAM;
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}
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static u32 __get_primary_bootmedia(u32 main_devstat)
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{
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u32 bootmode = (main_devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
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MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
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u32 bootmode_cfg =
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(main_devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >>
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MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT;
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switch (bootmode) {
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case BOOT_DEVICE_OSPI:
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fallthrough;
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case BOOT_DEVICE_QSPI:
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fallthrough;
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case BOOT_DEVICE_XSPI:
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fallthrough;
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case BOOT_DEVICE_SPI:
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return BOOT_DEVICE_SPI;
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case BOOT_DEVICE_ETHERNET_RGMII:
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fallthrough;
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case BOOT_DEVICE_ETHERNET_RMII:
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return BOOT_DEVICE_ETHERNET;
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case BOOT_DEVICE_EMMC:
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return BOOT_DEVICE_MMC1;
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case BOOT_DEVICE_MMC:
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if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_PORT_MASK) >>
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MAIN_DEVSTAT_PRIMARY_MMC_PORT_SHIFT)
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return BOOT_DEVICE_MMC2;
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return BOOT_DEVICE_MMC1;
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case BOOT_DEVICE_NOBOOT:
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return BOOT_DEVICE_RAM;
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}
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return bootmode;
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}
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u32 spl_boot_device(void)
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{
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u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
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if (bootindex == K3_PRIMARY_BOOTMODE)
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return __get_primary_bootmedia(devstat);
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else
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return __get_backup_bootmedia(devstat);
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}
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#endif
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