mirror of
https://github.com/AsahiLinux/u-boot
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f4686c3d5b
To avoid any glitches on MMC clock line, make use of pm per and post callbacks when loading sysfw. Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
232 lines
5.4 KiB
C
232 lines
5.4 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 <asm/arch/sysfw-loader.h>
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#include <asm/arch/sys_proto.h>
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#include "common.h"
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#include <asm/arch/sys_proto.h>
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#include <linux/soc/ti/ti_sci_protocol.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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#include <mmc.h>
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#if defined(CONFIG_SPL_BUILD)
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static void ctrl_mmr_unlock(void)
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{
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/* Unlock all PADCFG_MMR1 module registers */
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mmr_unlock(PADCFG_MMR1_BASE, 1);
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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, 3);
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mmr_unlock(CTRL_MMR0_BASE, 5);
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mmr_unlock(CTRL_MMR0_BASE, 6);
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}
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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_ENTENDED_BOOT_DATA_INFO,
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sizeof(struct rom_extended_boot_data));
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}
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#if defined(CONFIG_K3_LOAD_SYSFW) && CONFIG_IS_ENABLED(DM_MMC)
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void k3_mmc_stop_clock(void)
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{
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if (spl_boot_device() == BOOT_DEVICE_MMC1) {
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struct mmc *mmc = find_mmc_device(0);
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if (!mmc)
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return;
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mmc->saved_clock = mmc->clock;
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mmc_set_clock(mmc, 0, true);
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}
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}
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void k3_mmc_restart_clock(void)
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{
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if (spl_boot_device() == BOOT_DEVICE_MMC1) {
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struct mmc *mmc = find_mmc_device(0);
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if (!mmc)
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return;
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mmc_set_clock(mmc, mmc->saved_clock, false);
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}
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}
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#else
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void k3_mmc_stop_clock(void) {}
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void k3_mmc_restart_clock(void) {}
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#endif
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void board_init_f(ulong dummy)
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{
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#if defined(CONFIG_K3_LOAD_SYSFW)
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struct udevice *dev;
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int ret;
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#endif
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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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preloader_console_init();
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#if defined(CONFIG_K3_LOAD_SYSFW)
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/*
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* Process pinctrl for serial3 a.k.a. MAIN UART1 module and continue
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* regardless of the result of pinctrl. Do this without probing the
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* device, but instead by searching the device that would request the
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* given sequence number if probed. The UART will be used by the system
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* firmware (SYSFW) image for various purposes and SYSFW depends on us
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* to initialize its pin settings.
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*/
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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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/*
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* Load, start up, and configure system controller firmware.
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* This will determine whether or not ROM has already loaded
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* system firmware and if so, will only perform needed config
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* and not attempt to load firmware again.
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*/
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k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata), k3_mmc_stop_clock,
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k3_mmc_restart_clock);
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#endif
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/* Output System Firmware version info */
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k3_sysfw_print_ver();
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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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