blob: 09e55ed45667c3a9c99da856bd22a54afc0e040c [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0+
/*
* J721E: SoC specific initialization
*
* Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/
* David Huang <d-huang@ti.com>
*/
#include <common.h>
#include <init.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/armv7_mpu.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sysfw-loader.h>
#include "common.h"
#include <asm/arch/sys_proto.h>
#include <linux/soc/ti/ti_sci_protocol.h>
#include <dm.h>
#include <dm/uclass-internal.h>
#include <dm/pinctrl.h>
#include <mmc.h>
#include <remoteproc.h>
static void ctrl_mmr_unlock(void)
{
/* Unlock all WKUP_CTRL_MMR0 module registers */
mmr_unlock(WKUP_CTRL_MMR0_BASE, 0);
mmr_unlock(WKUP_CTRL_MMR0_BASE, 1);
mmr_unlock(WKUP_CTRL_MMR0_BASE, 2);
mmr_unlock(WKUP_CTRL_MMR0_BASE, 3);
mmr_unlock(WKUP_CTRL_MMR0_BASE, 4);
mmr_unlock(WKUP_CTRL_MMR0_BASE, 6);
mmr_unlock(WKUP_CTRL_MMR0_BASE, 7);
/* Unlock all MCU_CTRL_MMR0 module registers */
mmr_unlock(MCU_CTRL_MMR0_BASE, 0);
mmr_unlock(MCU_CTRL_MMR0_BASE, 1);
mmr_unlock(MCU_CTRL_MMR0_BASE, 2);
mmr_unlock(MCU_CTRL_MMR0_BASE, 3);
mmr_unlock(MCU_CTRL_MMR0_BASE, 4);
/* Unlock all CTRL_MMR0 module registers */
mmr_unlock(CTRL_MMR0_BASE, 0);
mmr_unlock(CTRL_MMR0_BASE, 1);
mmr_unlock(CTRL_MMR0_BASE, 2);
mmr_unlock(CTRL_MMR0_BASE, 3);
mmr_unlock(CTRL_MMR0_BASE, 5);
mmr_unlock(CTRL_MMR0_BASE, 7);
}
void k3_mmc_stop_clock(void)
{
if (IS_ENABLED(CONFIG_K3_LOAD_SYSFW)) {
if (spl_boot_device() == BOOT_DEVICE_MMC1) {
struct mmc *mmc = find_mmc_device(0);
if (!mmc)
return;
mmc->saved_clock = mmc->clock;
mmc_set_clock(mmc, 0, true);
}
}
}
void k3_mmc_restart_clock(void)
{
if (IS_ENABLED(CONFIG_K3_LOAD_SYSFW)) {
if (spl_boot_device() == BOOT_DEVICE_MMC1) {
struct mmc *mmc = find_mmc_device(0);
if (!mmc)
return;
mmc_set_clock(mmc, mmc->saved_clock, false);
}
}
}
/*
* This uninitialized global variable would normal end up in the .bss section,
* but the .bss is cleared between writing and reading this variable, so move
* it to the .data section.
*/
u32 bootindex __attribute__((section(".data")));
static struct rom_extended_boot_data bootdata __section(".data");
static void store_boot_info_from_rom(void)
{
bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX);
memcpy(&bootdata, (uintptr_t *)ROM_EXTENDED_BOOT_DATA_INFO,
sizeof(struct rom_extended_boot_data));
}
void k3_spl_init(void)
{
struct udevice *dev;
int ret;
/*
* Cannot delay this further as there is a chance that
* K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section.
*/
store_boot_info_from_rom();
/* Make all control module registers accessible */
ctrl_mmr_unlock();
if (IS_ENABLED(CONFIG_CPU_V7R)) {
disable_linefill_optimization();
setup_k3_mpu_regions();
}
/* Init DM early */
spl_early_init();
/* Prepare console output */
preloader_console_init();
if (IS_ENABLED(CONFIG_K3_LOAD_SYSFW)) {
/*
* Process pinctrl for the serial0 a.k.a. WKUP_UART0 module and continue
* regardless of the result of pinctrl. Do this without probing the
* device, but instead by searching the device that would request the
* given sequence number if probed. The UART will be used by the system
* firmware (SYSFW) image for various purposes and SYSFW depends on us
* to initialize its pin settings.
*/
ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, &dev);
if (!ret)
pinctrl_select_state(dev, "default");
/*
* Load, start up, and configure system controller firmware. Provide
* the U-Boot console init function to the SYSFW post-PM configuration
* callback hook, effectively switching on (or over) the console
* output.
*/
k3_sysfw_loader(is_rom_loaded_sysfw(&bootdata),
k3_mmc_stop_clock, k3_mmc_restart_clock);
if (IS_ENABLED(CONFIG_SPL_CLK_K3)) {
/*
* Force probe of clk_k3 driver here to ensure basic default clock
* configuration is always done for enabling PM services.
*/
ret = uclass_get_device_by_driver(UCLASS_CLK,
DM_DRIVER_GET(ti_clk),
&dev);
if (ret)
panic("Failed to initialize clk-k3!\n");
}
}
/* Output System Firmware version info */
k3_sysfw_print_ver();
}
bool check_rom_loaded_sysfw(void)
{
return is_rom_loaded_sysfw(&bootdata);
}
void k3_mem_init(void)
{
struct udevice *dev;
int ret;
if (IS_ENABLED(CONFIG_TARGET_J721S2_R5_EVM)) {
ret = uclass_get_device_by_name(UCLASS_MISC, "msmc", &dev);
if (ret)
panic("Probe of msmc failed: %d\n", ret);
ret = uclass_get_device(UCLASS_RAM, 0, &dev);
if (ret)
panic("DRAM 0 init failed: %d\n", ret);
ret = uclass_next_device_err(&dev);
if (ret)
panic("DRAM 1 init failed: %d\n", ret);
}
spl_enable_dcache();
}
u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
{
switch (boot_device) {
case BOOT_DEVICE_MMC1:
return MMCSD_MODE_EMMCBOOT;
case BOOT_DEVICE_MMC2:
return MMCSD_MODE_FS;
default:
return MMCSD_MODE_RAW;
}
}
static u32 __get_backup_bootmedia(u32 main_devstat)
{
u32 bkup_boot = (main_devstat & MAIN_DEVSTAT_BKUP_BOOTMODE_MASK) >>
MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT;
switch (bkup_boot) {
case BACKUP_BOOT_DEVICE_USB:
return BOOT_DEVICE_DFU;
case BACKUP_BOOT_DEVICE_UART:
return BOOT_DEVICE_UART;
case BACKUP_BOOT_DEVICE_ETHERNET:
return BOOT_DEVICE_ETHERNET;
case BACKUP_BOOT_DEVICE_MMC2:
{
u32 port = (main_devstat & MAIN_DEVSTAT_BKUP_MMC_PORT_MASK) >>
MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT;
if (port == 0x0)
return BOOT_DEVICE_MMC1;
return BOOT_DEVICE_MMC2;
}
case BACKUP_BOOT_DEVICE_SPI:
return BOOT_DEVICE_SPI;
case BACKUP_BOOT_DEVICE_I2C:
return BOOT_DEVICE_I2C;
}
return BOOT_DEVICE_RAM;
}
static u32 __get_primary_bootmedia(u32 main_devstat, u32 wkup_devstat)
{
u32 bootmode = (wkup_devstat & WKUP_DEVSTAT_PRIMARY_BOOTMODE_MASK) >>
WKUP_DEVSTAT_PRIMARY_BOOTMODE_SHIFT;
bootmode |= (main_devstat & MAIN_DEVSTAT_BOOT_MODE_B_MASK) <<
BOOT_MODE_B_SHIFT;
if (bootmode == BOOT_DEVICE_OSPI || bootmode == BOOT_DEVICE_QSPI ||
bootmode == BOOT_DEVICE_XSPI)
bootmode = BOOT_DEVICE_SPI;
if (bootmode == BOOT_DEVICE_MMC2) {
u32 port = (main_devstat &
MAIN_DEVSTAT_PRIM_BOOTMODE_MMC_PORT_MASK) >>
MAIN_DEVSTAT_PRIM_BOOTMODE_PORT_SHIFT;
if (port == 0x0)
bootmode = BOOT_DEVICE_MMC1;
}
return bootmode;
}
u32 spl_boot_device(void)
{
u32 wkup_devstat = readl(CTRLMMR_WKUP_DEVSTAT);
u32 main_devstat;
if (wkup_devstat & WKUP_DEVSTAT_MCU_OMLY_MASK) {
printf("ERROR: MCU only boot is not yet supported\n");
return BOOT_DEVICE_RAM;
}
/* MAIN CTRL MMR can only be read if MCU ONLY is 0 */
main_devstat = readl(CTRLMMR_MAIN_DEVSTAT);
if (bootindex == K3_PRIMARY_BOOTMODE)
return __get_primary_bootmedia(main_devstat, wkup_devstat);
else
return __get_backup_bootmedia(main_devstat);
}
#define J721S2_DEV_MCU_RTI0 295
#define J721S2_DEV_MCU_RTI1 296
#define J721S2_DEV_MCU_ARMSS0_CPU0 284
#define J721S2_DEV_MCU_ARMSS0_CPU1 285
void release_resources_for_core_shutdown(void)
{
if (IS_ENABLED(CONFIG_SYS_K3_SPL_ATF)) {
struct ti_sci_handle *ti_sci;
struct ti_sci_dev_ops *dev_ops;
struct ti_sci_proc_ops *proc_ops;
int ret;
u32 i;
const u32 put_device_ids[] = {
J721S2_DEV_MCU_RTI0,
J721S2_DEV_MCU_RTI1,
};
ti_sci = get_ti_sci_handle();
dev_ops = &ti_sci->ops.dev_ops;
proc_ops = &ti_sci->ops.proc_ops;
/* Iterate through list of devices to put (shutdown) */
for (i = 0; i < ARRAY_SIZE(put_device_ids); i++) {
u32 id = put_device_ids[i];
ret = dev_ops->put_device(ti_sci, id);
if (ret)
panic("Failed to put device %u (%d)\n", id, ret);
}
const u32 put_core_ids[] = {
J721S2_DEV_MCU_ARMSS0_CPU1,
J721S2_DEV_MCU_ARMSS0_CPU0, /* Handle CPU0 after CPU1 */
};
/* Iterate through list of cores to put (shutdown) */
for (i = 0; i < ARRAY_SIZE(put_core_ids); i++) {
u32 id = put_core_ids[i];
/*
* Queue up the core shutdown request. Note that this call
* needs to be followed up by an actual invocation of an WFE
* or WFI CPU instruction.
*/
ret = proc_ops->proc_shutdown_no_wait(ti_sci, id);
if (ret)
panic("Failed sending core %u shutdown message (%d)\n",
id, ret);
}
}
}