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|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2011 The Chromium OS Authors.
* (C) Copyright 2002-2006
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*/
#include <common.h>
#include <api.h>
#include <bootstage.h>
#include <cpu_func.h>
#include <cyclic.h>
#include <display_options.h>
#include <exports.h>
#ifdef CONFIG_MTD_NOR_FLASH
#include <flash.h>
#endif
#include <hang.h>
#include <image.h>
#include <irq_func.h>
#include <log.h>
#include <net.h>
#include <asm/cache.h>
#include <asm/global_data.h>
#include <u-boot/crc.h>
#include <binman.h>
#include <command.h>
#include <console.h>
#include <dm.h>
#include <env.h>
#include <env_internal.h>
#include <fdtdec.h>
#include <ide.h>
#include <init.h>
#include <initcall.h>
#include <kgdb.h>
#include <irq_func.h>
#include <malloc.h>
#include <mapmem.h>
#include <miiphy.h>
#include <mmc.h>
#include <mux.h>
#include <nand.h>
#include <of_live.h>
#include <onenand_uboot.h>
#include <pvblock.h>
#include <scsi.h>
#include <serial.h>
#include <status_led.h>
#include <stdio_dev.h>
#include <timer.h>
#include <trace.h>
#include <watchdog.h>
#include <xen.h>
#include <asm/sections.h>
#include <dm/root.h>
#include <dm/ofnode.h>
#include <linux/compiler.h>
#include <linux/err.h>
#include <efi_loader.h>
#include <wdt.h>
#include <asm-generic/gpio.h>
#include <efi_loader.h>
#include <relocate.h>
DECLARE_GLOBAL_DATA_PTR;
ulong monitor_flash_len;
__weak int board_flash_wp_on(void)
{
/*
* Most flashes can't be detected when write protection is enabled,
* so provide a way to let U-Boot gracefully ignore write protected
* devices.
*/
return 0;
}
__weak int cpu_secondary_init_r(void)
{
return 0;
}
static int initr_trace(void)
{
#ifdef CONFIG_TRACE
trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
#endif
return 0;
}
static int initr_reloc(void)
{
/* tell others: relocation done */
gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
return 0;
}
#if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
/*
* Some of these functions are needed purely because the functions they
* call return void. If we change them to return 0, these stubs can go away.
*/
static int initr_caches(void)
{
/* Enable caches */
enable_caches();
return 0;
}
#endif
__weak int fixup_cpu(void)
{
return 0;
}
static int initr_reloc_global_data(void)
{
#ifdef __ARM__
monitor_flash_len = _end - __image_copy_start;
#elif defined(CONFIG_RISCV)
monitor_flash_len = (ulong)_end - (ulong)_start;
#elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
monitor_flash_len = (ulong)__init_end - gd->relocaddr;
#endif
#if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
/*
* The gd->cpu pointer is set to an address in flash before relocation.
* We need to update it to point to the same CPU entry in RAM.
* TODO: why not just add gd->reloc_ofs?
*/
gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
/*
* If we didn't know the cpu mask & # cores, we can save them of
* now rather than 'computing' them constantly
*/
fixup_cpu();
#endif
#ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
/*
* Relocate the early env_addr pointer unless we know it is not inside
* the binary. Some systems need this and for the rest, it doesn't hurt.
*/
gd->env_addr += gd->reloc_off;
#endif
/*
* The fdt_blob needs to be moved to new relocation address
* incase of FDT blob is embedded with in image
*/
if (IS_ENABLED(CONFIG_OF_EMBED) && IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC))
gd->fdt_blob += gd->reloc_off;
#ifdef CONFIG_EFI_LOADER
/*
* On the ARM architecture gd is mapped to a fixed register (r9 or x18).
* As this register may be overwritten by an EFI payload we save it here
* and restore it on every callback entered.
*/
efi_save_gd();
efi_runtime_relocate(gd->relocaddr, NULL);
#endif
return 0;
}
__weak int arch_initr_trap(void)
{
return 0;
}
#if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
static int initr_unlock_ram_in_cache(void)
{
unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
return 0;
}
#endif
static int initr_barrier(void)
{
#ifdef CONFIG_PPC
/* TODO: Can we not use dmb() macros for this? */
asm("sync ; isync");
#endif
return 0;
}
static int initr_malloc(void)
{
ulong start;
#if CONFIG_VAL(SYS_MALLOC_F_LEN)
debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
gd->malloc_ptr / 1024);
#endif
/* The malloc area is immediately below the monitor copy in DRAM */
/*
* This value MUST match the value of gd->start_addr_sp in board_f.c:
* reserve_noncached().
*/
start = gd->relocaddr - TOTAL_MALLOC_LEN;
gd_set_malloc_start(start);
mem_malloc_init((ulong)map_sysmem(start, TOTAL_MALLOC_LEN),
TOTAL_MALLOC_LEN);
return 0;
}
static int initr_of_live(void)
{
if (CONFIG_IS_ENABLED(OF_LIVE)) {
int ret;
bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
ret = of_live_build(gd->fdt_blob,
(struct device_node **)gd_of_root_ptr());
bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
if (ret)
return ret;
}
return 0;
}
#ifdef CONFIG_DM
static int initr_dm(void)
{
int ret;
oftree_reset();
/* Save the pre-reloc driver model and start a new one */
gd->dm_root_f = gd->dm_root;
gd->dm_root = NULL;
#ifdef CONFIG_TIMER
gd->timer = NULL;
#endif
bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
ret = dm_init_and_scan(false);
bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
if (ret)
return ret;
return 0;
}
#endif
static int initr_dm_devices(void)
{
int ret;
if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
ret = dm_timer_init();
if (ret)
return ret;
}
if (IS_ENABLED(CONFIG_MULTIPLEXER)) {
/*
* Initialize the multiplexer controls to their default state.
* This must be done early as other drivers may unknowingly
* rely on it.
*/
ret = dm_mux_init();
if (ret)
return ret;
}
return 0;
}
static int initr_bootstage(void)
{
bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
return 0;
}
__weak int power_init_board(void)
{
return 0;
}
static int initr_announce(void)
{
debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
return 0;
}
#ifdef CONFIG_NEEDS_MANUAL_RELOC
static int initr_manual_reloc_cmdtable(void)
{
fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
ll_entry_count(struct cmd_tbl, cmd));
return 0;
}
#endif
static int initr_binman(void)
{
int ret;
if (!CONFIG_IS_ENABLED(BINMAN_FDT))
return 0;
ret = binman_init();
if (ret)
printf("binman_init failed:%d\n", ret);
return ret;
}
#if defined(CONFIG_MTD_NOR_FLASH)
__weak int is_flash_available(void)
{
return 1;
}
static int initr_flash(void)
{
ulong flash_size = 0;
struct bd_info *bd = gd->bd;
if (!is_flash_available())
return 0;
puts("Flash: ");
if (board_flash_wp_on())
printf("Uninitialized - Write Protect On\n");
else
flash_size = flash_init();
print_size(flash_size, "");
#ifdef CONFIG_SYS_FLASH_CHECKSUM
/*
* Compute and print flash CRC if flashchecksum is set to 'y'
*
* NOTE: Maybe we should add some schedule()? XXX
*/
if (env_get_yesno("flashchecksum") == 1) {
const uchar *flash_base = (const uchar *)CFG_SYS_FLASH_BASE;
printf(" CRC: %08X", crc32(0,
flash_base,
flash_size));
}
#endif /* CONFIG_SYS_FLASH_CHECKSUM */
putc('\n');
/* update start of FLASH memory */
#ifdef CFG_SYS_FLASH_BASE
bd->bi_flashstart = CFG_SYS_FLASH_BASE;
#endif
/* size of FLASH memory (final value) */
bd->bi_flashsize = flash_size;
#if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
/* Make a update of the Memctrl. */
update_flash_size(flash_size);
#endif
#if defined(CONFIG_OXC) || defined(CONFIG_RMU)
/* flash mapped at end of memory map */
bd->bi_flashoffset = CONFIG_TEXT_BASE + flash_size;
#elif CONFIG_SYS_MONITOR_BASE == CFG_SYS_FLASH_BASE
bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
#endif
return 0;
}
#endif
#ifdef CONFIG_CMD_NAND
/* go init the NAND */
static int initr_nand(void)
{
puts("NAND: ");
nand_init();
printf("%lu MiB\n", nand_size() / 1024);
return 0;
}
#endif
#if defined(CONFIG_CMD_ONENAND)
/* go init the NAND */
static int initr_onenand(void)
{
puts("NAND: ");
onenand_init();
return 0;
}
#endif
#ifdef CONFIG_MMC
static int initr_mmc(void)
{
puts("MMC: ");
mmc_initialize(gd->bd);
return 0;
}
#endif
#ifdef CONFIG_PVBLOCK
static int initr_pvblock(void)
{
puts("PVBLOCK: ");
pvblock_init();
return 0;
}
#endif
/*
* Tell if it's OK to load the environment early in boot.
*
* If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
* if this is OK (defaulting to saying it's OK).
*
* NOTE: Loading the environment early can be a bad idea if security is
* important, since no verification is done on the environment.
*
* Return: 0 if environment should not be loaded, !=0 if it is ok to load
*/
static int should_load_env(void)
{
if (IS_ENABLED(CONFIG_OF_CONTROL))
return ofnode_conf_read_int("load-environment", 1);
if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
return 0;
return 1;
}
static int initr_env(void)
{
/* initialize environment */
if (should_load_env())
env_relocate();
else
env_set_default(NULL, 0);
env_import_fdt();
if (IS_ENABLED(CONFIG_OF_CONTROL))
env_set_hex("fdtcontroladdr",
(unsigned long)map_to_sysmem(gd->fdt_blob));
#if (IS_ENABLED(CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR) || \
IS_ENABLED(CONFIG_SAVE_PREV_BL_FDT_ADDR))
save_prev_bl_data();
#endif
/* Initialize from environment */
image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
return 0;
}
#ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
static int initr_malloc_bootparams(void)
{
gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
if (!gd->bd->bi_boot_params) {
puts("WARNING: Cannot allocate space for boot parameters\n");
return -ENOMEM;
}
return 0;
}
#endif
#if defined(CONFIG_LED_STATUS)
static int initr_status_led(void)
{
#if defined(CONFIG_LED_STATUS_BOOT)
status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
#else
status_led_init();
#endif
return 0;
}
#endif
#if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
static int initr_scsi(void)
{
puts("SCSI: ");
scsi_init();
puts("\n");
return 0;
}
#endif
#ifdef CONFIG_CMD_NET
static int initr_net(void)
{
puts("Net: ");
eth_initialize();
#if defined(CONFIG_RESET_PHY_R)
debug("Reset Ethernet PHY\n");
reset_phy();
#endif
return 0;
}
#endif
#ifdef CONFIG_POST
static int initr_post(void)
{
post_run(NULL, POST_RAM | post_bootmode_get(0));
return 0;
}
#endif
#if defined(CFG_PRAM)
/*
* Export available size of memory for Linux, taking into account the
* protected RAM at top of memory
*/
int initr_mem(void)
{
ulong pram = 0;
char memsz[32];
pram = env_get_ulong("pram", 10, CFG_PRAM);
sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
env_set("mem", memsz);
return 0;
}
#endif
static int dm_announce(void)
{
int device_count;
int uclass_count;
if (IS_ENABLED(CONFIG_DM)) {
dm_get_stats(&device_count, &uclass_count);
printf("Core: %d devices, %d uclasses", device_count,
uclass_count);
if (CONFIG_IS_ENABLED(OF_REAL))
printf(", devicetree: %s", fdtdec_get_srcname());
printf("\n");
if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
(gd->fdt_src == FDTSRC_SEPARATE ||
gd->fdt_src == FDTSRC_EMBED)) {
printf("Warning: Unexpected devicetree source (not from a prior stage)");
printf("Warning: U-Boot may not function properly\n");
}
if (IS_ENABLED(CONFIG_OF_TAG_MIGRATE) &&
(gd->flags & GD_FLG_OF_TAG_MIGRATE))
/*
* U-Boot will silently fail to work after 2023.07 if
* there are old tags present
*/
printf("Warning: Device tree includes old 'u-boot,dm-' tags: please fix by 2023.07!\n");
}
return 0;
}
static int run_main_loop(void)
{
#ifdef CONFIG_SANDBOX
sandbox_main_loop_init();
#endif
event_notify_null(EVT_MAIN_LOOP);
/* main_loop() can return to retry autoboot, if so just run it again */
for (;;)
main_loop();
return 0;
}
/*
* Over time we hope to remove these functions with code fragments and
* stub functions, and instead call the relevant function directly.
*
* We also hope to remove most of the driver-related init and do it if/when
* the driver is later used.
*
* TODO: perhaps reset the watchdog in the initcall function after each call?
*/
static init_fnc_t init_sequence_r[] = {
initr_trace,
initr_reloc,
event_init,
/* TODO: could x86/PPC have this also perhaps? */
#if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
initr_caches,
/* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
* A temporary mapping of IFC high region is since removed,
* so environmental variables in NOR flash is not available
* until board_init() is called below to remap IFC to high
* region.
*/
#endif
initr_reloc_global_data,
#if IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC) && CONFIG_IS_ENABLED(EVENT)
event_manual_reloc,
#endif
#if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
initr_unlock_ram_in_cache,
#endif
initr_barrier,
initr_malloc,
log_init,
initr_bootstage, /* Needs malloc() but has its own timer */
#if defined(CONFIG_CONSOLE_RECORD)
console_record_init,
#endif
#ifdef CONFIG_SYS_NONCACHED_MEMORY
noncached_init,
#endif
initr_of_live,
#ifdef CONFIG_DM
initr_dm,
#endif
#ifdef CONFIG_ADDR_MAP
init_addr_map,
#endif
#if defined(CONFIG_ARM) || defined(CONFIG_RISCV) || defined(CONFIG_SANDBOX)
board_init, /* Setup chipselects */
#endif
/*
* TODO: printing of the clock inforamtion of the board is now
* implemented as part of bdinfo command. Currently only support for
* davinci SOC's is added. Remove this check once all the board
* implement this.
*/
#ifdef CONFIG_CLOCKS
set_cpu_clk_info, /* Setup clock information */
#endif
#ifdef CONFIG_EFI_LOADER
efi_memory_init,
#endif
initr_binman,
#ifdef CONFIG_FSP_VERSION2
arch_fsp_init_r,
#endif
initr_dm_devices,
stdio_init_tables,
serial_initialize,
initr_announce,
dm_announce,
#if CONFIG_IS_ENABLED(WDT)
initr_watchdog,
#endif
INIT_FUNC_WATCHDOG_RESET
#if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
blkcache_init,
#endif
#ifdef CONFIG_NEEDS_MANUAL_RELOC
initr_manual_reloc_cmdtable,
#endif
arch_initr_trap,
#if defined(CONFIG_BOARD_EARLY_INIT_R)
board_early_init_r,
#endif
INIT_FUNC_WATCHDOG_RESET
#ifdef CONFIG_POST
post_output_backlog,
#endif
INIT_FUNC_WATCHDOG_RESET
#if defined(CONFIG_PCI_INIT_R) && defined(CONFIG_SYS_EARLY_PCI_INIT)
/*
* Do early PCI configuration _before_ the flash gets initialised,
* because PCU resources are crucial for flash access on some boards.
*/
pci_init,
#endif
#ifdef CONFIG_ARCH_EARLY_INIT_R
arch_early_init_r,
#endif
power_init_board,
#ifdef CONFIG_MTD_NOR_FLASH
initr_flash,
#endif
INIT_FUNC_WATCHDOG_RESET
#if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
/* initialize higher level parts of CPU like time base and timers */
cpu_init_r,
#endif
#ifdef CONFIG_EFI_LOADER
efi_init_early,
#endif
#ifdef CONFIG_CMD_NAND
initr_nand,
#endif
#ifdef CONFIG_CMD_ONENAND
initr_onenand,
#endif
#ifdef CONFIG_MMC
initr_mmc,
#endif
#ifdef CONFIG_XEN
xen_init,
#endif
#ifdef CONFIG_PVBLOCK
initr_pvblock,
#endif
initr_env,
#ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
initr_malloc_bootparams,
#endif
INIT_FUNC_WATCHDOG_RESET
cpu_secondary_init_r,
#if defined(CONFIG_ID_EEPROM)
mac_read_from_eeprom,
#endif
INIT_FUNC_WATCHDOG_RESET
#if defined(CONFIG_PCI_INIT_R) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
/*
* Do pci configuration
*/
pci_init,
#endif
stdio_add_devices,
jumptable_init,
#ifdef CONFIG_API
api_init,
#endif
console_init_r, /* fully init console as a device */
#ifdef CONFIG_DISPLAY_BOARDINFO_LATE
console_announce_r,
show_board_info,
#endif
#ifdef CONFIG_ARCH_MISC_INIT
arch_misc_init, /* miscellaneous arch-dependent init */
#endif
#ifdef CONFIG_MISC_INIT_R
misc_init_r, /* miscellaneous platform-dependent init */
#endif
INIT_FUNC_WATCHDOG_RESET
#ifdef CONFIG_CMD_KGDB
kgdb_init,
#endif
interrupt_init,
#if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
timer_init, /* initialize timer */
#endif
#if defined(CONFIG_LED_STATUS)
initr_status_led,
#endif
/* PPC has a udelay(20) here dating from 2002. Why? */
#ifdef CONFIG_BOARD_LATE_INIT
board_late_init,
#endif
#if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
INIT_FUNC_WATCHDOG_RESET
initr_scsi,
#endif
#ifdef CONFIG_BITBANGMII
bb_miiphy_init,
#endif
#ifdef CONFIG_PCI_ENDPOINT
pci_ep_init,
#endif
#ifdef CONFIG_CMD_NET
INIT_FUNC_WATCHDOG_RESET
initr_net,
#endif
#ifdef CONFIG_POST
initr_post,
#endif
INIT_FUNC_WATCHDOG_RESET
INITCALL_EVENT(EVT_LAST_STAGE_INIT),
#if defined(CFG_PRAM)
initr_mem,
#endif
run_main_loop,
};
void board_init_r(gd_t *new_gd, ulong dest_addr)
{
/*
* The pre-relocation drivers may be using memory that has now gone
* away. Mark serial as unavailable - this will fall back to the debug
* UART if available.
*
* Do the same with log drivers since the memory may not be available.
*/
gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY);
/*
* Set up the new global data pointer. So far only x86 does this
* here.
* TODO(sjg@chromium.org): Consider doing this for all archs, or
* dropping the new_gd parameter.
*/
if (CONFIG_IS_ENABLED(X86_64) && !IS_ENABLED(CONFIG_EFI_APP))
arch_setup_gd(new_gd);
#if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
gd = new_gd;
#endif
gd->flags &= ~GD_FLG_LOG_READY;
if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC))
initcall_manual_reloc(init_sequence_r);
if (initcall_run_list(init_sequence_r))
hang();
/* NOTREACHED - run_main_loop() does not return */
hang();
}
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