mirror of
https://github.com/AsahiLinux/u-boot
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7c34b71a42
The boot mode detection assumes that BOOT_DEVICE_MMC2 should always result in MMCSD_MODE_FS, but MMCSD_MODE_RAW is also a valid option for this port. The current logic also avoids looking at the bootmode pin strapping, which should be the primary means of determining whether a device is being booted in MMCSD_MODE_EMMCBOOT mode. Switch around the logic to check the boot mode to determine whether the eMMC boot mode is expected or MMC/SD boot mode. From there we can look at the boot mode config if in MMC/SD boot mode to determine whether to attempt RAW or FS based booting. This change allows U-Boot to also be successfully booted from RAW offsets in addition to from a filesystem. Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
289 lines
7.5 KiB
C
289 lines
7.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* AM625: SoC specific initialization
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*
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* Copyright (C) 2020-2022 Texas Instruments Incorporated - https://www.ti.com/
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* Suman Anna <s-anna@ti.com>
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*/
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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 <asm/arch/sysfw-loader.h>
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#include "common.h"
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#include <dm.h>
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#include <dm/uclass-internal.h>
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#include <dm/pinctrl.h>
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/*
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* This uninitialized global variable would normal end up in the .bss section,
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* but the .bss is cleared between writing and reading this variable, so move
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* it to the .data section.
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*/
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u32 bootindex __section(".data");
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static struct rom_extended_boot_data bootdata __section(".data");
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static void store_boot_info_from_rom(void)
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{
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bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
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memcpy(&bootdata, (uintptr_t *)ROM_EXTENDED_BOOT_DATA_INFO,
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sizeof(struct rom_extended_boot_data));
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}
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static void ctrl_mmr_unlock(void)
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{
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/* Unlock all WKUP_CTRL_MMR0 module registers */
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mmr_unlock(WKUP_CTRL_MMR0_BASE, 0);
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mmr_unlock(WKUP_CTRL_MMR0_BASE, 1);
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mmr_unlock(WKUP_CTRL_MMR0_BASE, 2);
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mmr_unlock(WKUP_CTRL_MMR0_BASE, 3);
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mmr_unlock(WKUP_CTRL_MMR0_BASE, 4);
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mmr_unlock(WKUP_CTRL_MMR0_BASE, 5);
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mmr_unlock(WKUP_CTRL_MMR0_BASE, 6);
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mmr_unlock(WKUP_CTRL_MMR0_BASE, 7);
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/* Unlock all CTRL_MMR0 module registers */
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mmr_unlock(CTRL_MMR0_BASE, 0);
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mmr_unlock(CTRL_MMR0_BASE, 1);
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mmr_unlock(CTRL_MMR0_BASE, 2);
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mmr_unlock(CTRL_MMR0_BASE, 4);
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mmr_unlock(CTRL_MMR0_BASE, 6);
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/* Unlock all MCU_CTRL_MMR0 module registers */
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mmr_unlock(MCU_CTRL_MMR0_BASE, 0);
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mmr_unlock(MCU_CTRL_MMR0_BASE, 1);
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mmr_unlock(MCU_CTRL_MMR0_BASE, 2);
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mmr_unlock(MCU_CTRL_MMR0_BASE, 3);
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mmr_unlock(MCU_CTRL_MMR0_BASE, 4);
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mmr_unlock(MCU_CTRL_MMR0_BASE, 6);
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/* Unlock PADCFG_CTRL_MMR padconf registers */
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mmr_unlock(PADCFG_MMR0_BASE, 1);
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mmr_unlock(PADCFG_MMR1_BASE, 1);
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}
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static __maybe_unused void enable_mcu_esm_reset(void)
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{
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/* Set CTRLMMR_MCU_RST_CTRL:MCU_ESM_ERROR_RST_EN_Z to '0' (low active) */
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u32 stat = readl(CTRLMMR_MCU_RST_CTRL);
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stat &= RST_CTRL_ESM_ERROR_RST_EN_Z_MASK;
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writel(stat, CTRLMMR_MCU_RST_CTRL);
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}
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void board_init_f(ulong dummy)
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{
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struct udevice *dev;
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int ret;
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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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/*
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* Cannot delay this further as there is a chance that
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* K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
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*/
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store_boot_info_from_rom();
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ctrl_mmr_unlock();
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/* Init DM early */
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spl_early_init();
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/*
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* Process pinctrl for the serial0 and serial3, aka WKUP_UART0 and
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* MAIN_UART1 modules and continue regardless of the result of pinctrl.
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* Do this without probing the device, but instead by searching the
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* device that would request the given sequence number if probed. The
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* UARTs will be used by the DM firmware and TIFS firmware images
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* respectively and the firmware depend on SPL to initialize the pin
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* settings.
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*/
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ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, &dev);
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if (!ret)
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pinctrl_select_state(dev, "default");
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ret = uclass_find_device_by_seq(UCLASS_SERIAL, 3, &dev);
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if (!ret)
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pinctrl_select_state(dev, "default");
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preloader_console_init();
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#ifdef CONFIG_K3_EARLY_CONS
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/*
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* Allow establishing an early console as required for example when
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* doing a UART-based boot. Note that this console may not "survive"
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* through a SYSFW PM-init step and will need a re-init in some way
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* due to changing module clock frequencies.
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*/
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early_console_init();
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#endif
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#if defined(CONFIG_K3_LOAD_SYSFW)
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/*
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* Configure and start up system controller firmware. Provide
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* the U-Boot console init function to the SYSFW post-PM configuration
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* callback hook, effectively switching on (or over) the console
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* output.
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*/
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ret = is_rom_loaded_sysfw(&bootdata);
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if (!ret)
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panic("ROM has not loaded TIFS firmware\n");
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k3_sysfw_loader(true, NULL, NULL);
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#endif
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/*
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* Force probe of clk_k3 driver here to ensure basic default clock
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* configuration is always done.
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*/
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if (IS_ENABLED(CONFIG_SPL_CLK_K3)) {
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ret = uclass_get_device_by_driver(UCLASS_CLK,
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DM_DRIVER_GET(ti_clk),
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&dev);
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if (ret)
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printf("Failed to initialize clk-k3!\n");
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}
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/* Output System Firmware version info */
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k3_sysfw_print_ver();
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if (IS_ENABLED(CONFIG_ESM_K3)) {
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/* Probe/configure ESM0 */
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ret = uclass_get_device_by_name(UCLASS_MISC, "esm@420000", &dev);
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if (ret)
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printf("esm main init failed: %d\n", ret);
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/* Probe/configure MCUESM */
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ret = uclass_get_device_by_name(UCLASS_MISC, "esm@4100000", &dev);
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if (ret)
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printf("esm mcu init failed: %d\n", ret);
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enable_mcu_esm_reset();
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}
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#if defined(CONFIG_K3_AM64_DDRSS)
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ret = uclass_get_device(UCLASS_RAM, 0, &dev);
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if (ret)
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panic("DRAM init failed: %d\n", ret);
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#endif
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}
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u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
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{
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u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT);
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u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
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MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
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u32 bootmode_cfg = (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_EMMC:
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return MMCSD_MODE_EMMCBOOT;
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case BOOT_DEVICE_MMC:
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if (bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_FS_RAW_MASK)
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return MMCSD_MODE_RAW;
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default:
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return MMCSD_MODE_FS;
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}
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}
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static u32 __get_backup_bootmedia(u32 devstat)
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{
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u32 bkup_bootmode = (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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(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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case BACKUP_BOOT_DEVICE_DFU:
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if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK)
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return BOOT_DEVICE_USB;
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return BOOT_DEVICE_DFU;
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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 devstat)
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{
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u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
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MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
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u32 bootmode_cfg = (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_DFU:
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if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_USB_MODE_MASK) >>
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MAIN_DEVSTAT_PRIMARY_USB_MODE_SHIFT)
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return BOOT_DEVICE_USB;
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return BOOT_DEVICE_DFU;
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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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u32 bootmedia;
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if (bootindex == K3_PRIMARY_BOOTMODE)
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bootmedia = __get_primary_bootmedia(devstat);
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else
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bootmedia = __get_backup_bootmedia(devstat);
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debug("am625_init: %s: devstat = 0x%x bootmedia = 0x%x bootindex = %d\n",
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__func__, devstat, bootmedia, bootindex);
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return bootmedia;
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}
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