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u-boot/common/board_f.c
Simon Glass 5ee94b4f40 board_f: Drop the timer after relocation 
Once U-Boot relocates itself the existing driver-model timer (if any) is
no-longer valid until the device is reinitialised. Any use of the device
may cause a crash. To handle this, set the timer to NULL after relocation.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-16 14:57:44 +08:00

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/*
* 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>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <console.h>
#include <environment.h>
#include <dm.h>
#include <fdtdec.h>
#include <fs.h>
#include <i2c.h>
#include <initcall.h>
#include <init_helpers.h>
#include <logbuff.h>
#include <malloc.h>
#include <mapmem.h>
#include <os.h>
#include <post.h>
#include <relocate.h>
#include <spi.h>
#include <status_led.h>
#include <timer.h>
#include <trace.h>
#include <video.h>
#include <watchdog.h>
#ifdef CONFIG_MACH_TYPE
#include <asm/mach-types.h>
#endif
#if defined(CONFIG_MP) && defined(CONFIG_PPC)
#include <asm/mp.h>
#endif
#include <asm/io.h>
#include <asm/sections.h>
#include <dm/root.h>
#include <linux/errno.h>
/*
* Pointer to initial global data area
*
* Here we initialize it if needed.
*/
#ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
#undef XTRN_DECLARE_GLOBAL_DATA_PTR
#define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
#else
DECLARE_GLOBAL_DATA_PTR;
#endif
/*
* TODO(sjg@chromium.org): IMO this code should be
* refactored to a single function, something like:
*
* void led_set_state(enum led_colour_t colour, int on);
*/
/************************************************************************
* Coloured LED functionality
************************************************************************
* May be supplied by boards if desired
*/
__weak void coloured_LED_init(void) {}
__weak void red_led_on(void) {}
__weak void red_led_off(void) {}
__weak void green_led_on(void) {}
__weak void green_led_off(void) {}
__weak void yellow_led_on(void) {}
__weak void yellow_led_off(void) {}
__weak void blue_led_on(void) {}
__weak void blue_led_off(void) {}
/*
* Why is gd allocated a register? Prior to reloc it might be better to
* just pass it around to each function in this file?
*
* After reloc one could argue that it is hardly used and doesn't need
* to be in a register. Or if it is it should perhaps hold pointers to all
* global data for all modules, so that post-reloc we can avoid the massive
* literal pool we get on ARM. Or perhaps just encourage each module to use
* a structure...
*/
#if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
static int init_func_watchdog_init(void)
{
# if defined(CONFIG_HW_WATCHDOG) && \
(defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \
defined(CONFIG_DESIGNWARE_WATCHDOG) || \
defined(CONFIG_IMX_WATCHDOG))
hw_watchdog_init();
puts(" Watchdog enabled\n");
# endif
WATCHDOG_RESET();
return 0;
}
int init_func_watchdog_reset(void)
{
WATCHDOG_RESET();
return 0;
}
#endif /* CONFIG_WATCHDOG */
__weak void board_add_ram_info(int use_default)
{
/* please define platform specific board_add_ram_info() */
}
static int init_baud_rate(void)
{
gd->baudrate = env_get_ulong("baudrate", 10, CONFIG_BAUDRATE);
return 0;
}
static int display_text_info(void)
{
#if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
ulong bss_start, bss_end, text_base;
bss_start = (ulong)&__bss_start;
bss_end = (ulong)&__bss_end;
#ifdef CONFIG_SYS_TEXT_BASE
text_base = CONFIG_SYS_TEXT_BASE;
#else
text_base = CONFIG_SYS_MONITOR_BASE;
#endif
debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
text_base, bss_start, bss_end);
#endif
return 0;
}
static int announce_dram_init(void)
{
puts("DRAM: ");
return 0;
}
static int show_dram_config(void)
{
unsigned long long size;
#ifdef CONFIG_NR_DRAM_BANKS
int i;
debug("\nRAM Configuration:\n");
for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
size += gd->bd->bi_dram[i].size;
debug("Bank #%d: %llx ", i,
(unsigned long long)(gd->bd->bi_dram[i].start));
#ifdef DEBUG
print_size(gd->bd->bi_dram[i].size, "\n");
#endif
}
debug("\nDRAM: ");
#else
size = gd->ram_size;
#endif
print_size(size, "");
board_add_ram_info(0);
putc('\n');
return 0;
}
__weak int dram_init_banksize(void)
{
#if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
gd->bd->bi_dram[0].size = get_effective_memsize();
#endif
return 0;
}
#if defined(CONFIG_SYS_I2C)
static int init_func_i2c(void)
{
puts("I2C: ");
#ifdef CONFIG_SYS_I2C
i2c_init_all();
#else
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
puts("ready\n");
return 0;
}
#endif
#if defined(CONFIG_HARD_SPI)
static int init_func_spi(void)
{
puts("SPI: ");
spi_init();
puts("ready\n");
return 0;
}
#endif
static int setup_mon_len(void)
{
#if defined(__ARM__) || defined(__MICROBLAZE__)
gd->mon_len = (ulong)&__bss_end - (ulong)_start;
#elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
gd->mon_len = (ulong)&_end - (ulong)_init;
#elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
gd->mon_len = CONFIG_SYS_MONITOR_LEN;
#elif defined(CONFIG_NDS32) || defined(CONFIG_SH)
gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
#elif defined(CONFIG_SYS_MONITOR_BASE)
/* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
#endif
return 0;
}
__weak int arch_cpu_init(void)
{
return 0;
}
__weak int mach_cpu_init(void)
{
return 0;
}
/* Get the top of usable RAM */
__weak ulong board_get_usable_ram_top(ulong total_size)
{
#ifdef CONFIG_SYS_SDRAM_BASE
/*
* Detect whether we have so much RAM that it goes past the end of our
* 32-bit address space. If so, clip the usable RAM so it doesn't.
*/
if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
/*
* Will wrap back to top of 32-bit space when reservations
* are made.
*/
return 0;
#endif
return gd->ram_top;
}
static int setup_dest_addr(void)
{
debug("Monitor len: %08lX\n", gd->mon_len);
/*
* Ram is setup, size stored in gd !!
*/
debug("Ram size: %08lX\n", (ulong)gd->ram_size);
#if defined(CONFIG_SYS_MEM_TOP_HIDE)
/*
* Subtract specified amount of memory to hide so that it won't
* get "touched" at all by U-Boot. By fixing up gd->ram_size
* the Linux kernel should now get passed the now "corrected"
* memory size and won't touch it either. This should work
* for arch/ppc and arch/powerpc. Only Linux board ports in
* arch/powerpc with bootwrapper support, that recalculate the
* memory size from the SDRAM controller setup will have to
* get fixed.
*/
gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
#endif
#ifdef CONFIG_SYS_SDRAM_BASE
gd->ram_top = CONFIG_SYS_SDRAM_BASE;
#endif
gd->ram_top += get_effective_memsize();
gd->ram_top = board_get_usable_ram_top(gd->mon_len);
gd->relocaddr = gd->ram_top;
debug("Ram top: %08lX\n", (ulong)gd->ram_top);
#if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
/*
* We need to make sure the location we intend to put secondary core
* boot code is reserved and not used by any part of u-boot
*/
if (gd->relocaddr > determine_mp_bootpg(NULL)) {
gd->relocaddr = determine_mp_bootpg(NULL);
debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
}
#endif
return 0;
}
#if defined(CONFIG_LOGBUFFER)
static int reserve_logbuffer(void)
{
#ifndef CONFIG_ALT_LB_ADDR
/* reserve kernel log buffer */
gd->relocaddr -= LOGBUFF_RESERVE;
debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
gd->relocaddr);
#endif
return 0;
}
#endif
#ifdef CONFIG_PRAM
/* reserve protected RAM */
static int reserve_pram(void)
{
ulong reg;
reg = env_get_ulong("pram", 10, CONFIG_PRAM);
gd->relocaddr -= (reg << 10); /* size is in kB */
debug("Reserving %ldk for protected RAM at %08lx\n", reg,
gd->relocaddr);
return 0;
}
#endif /* CONFIG_PRAM */
/* Round memory pointer down to next 4 kB limit */
static int reserve_round_4k(void)
{
gd->relocaddr &= ~(4096 - 1);
return 0;
}
#ifdef CONFIG_ARM
__weak int reserve_mmu(void)
{
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
/* reserve TLB table */
gd->arch.tlb_size = PGTABLE_SIZE;
gd->relocaddr -= gd->arch.tlb_size;
/* round down to next 64 kB limit */
gd->relocaddr &= ~(0x10000 - 1);
gd->arch.tlb_addr = gd->relocaddr;
debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
gd->arch.tlb_addr + gd->arch.tlb_size);
#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
/*
* Record allocated tlb_addr in case gd->tlb_addr to be overwritten
* with location within secure ram.
*/
gd->arch.tlb_allocated = gd->arch.tlb_addr;
#endif
#endif
return 0;
}
#endif
static int reserve_video(void)
{
#ifdef CONFIG_DM_VIDEO
ulong addr;
int ret;
addr = gd->relocaddr;
ret = video_reserve(&addr);
if (ret)
return ret;
gd->relocaddr = addr;
#elif defined(CONFIG_LCD)
# ifdef CONFIG_FB_ADDR
gd->fb_base = CONFIG_FB_ADDR;
# else
/* reserve memory for LCD display (always full pages) */
gd->relocaddr = lcd_setmem(gd->relocaddr);
gd->fb_base = gd->relocaddr;
# endif /* CONFIG_FB_ADDR */
#elif defined(CONFIG_VIDEO) && \
(!defined(CONFIG_PPC)) && \
!defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
!defined(CONFIG_M68K)
/* reserve memory for video display (always full pages) */
gd->relocaddr = video_setmem(gd->relocaddr);
gd->fb_base = gd->relocaddr;
#endif
return 0;
}
static int reserve_trace(void)
{
#ifdef CONFIG_TRACE
gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
debug("Reserving %dk for trace data at: %08lx\n",
CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
#endif
return 0;
}
static int reserve_uboot(void)
{
/*
* reserve memory for U-Boot code, data & bss
* round down to next 4 kB limit
*/
gd->relocaddr -= gd->mon_len;
gd->relocaddr &= ~(4096 - 1);
#if defined(CONFIG_E500) || defined(CONFIG_MIPS)
/* round down to next 64 kB limit so that IVPR stays aligned */
gd->relocaddr &= ~(65536 - 1);
#endif
debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
gd->relocaddr);
gd->start_addr_sp = gd->relocaddr;
return 0;
}
/* reserve memory for malloc() area */
static int reserve_malloc(void)
{
gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
debug("Reserving %dk for malloc() at: %08lx\n",
TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
return 0;
}
/* (permanently) allocate a Board Info struct */
static int reserve_board(void)
{
if (!gd->bd) {
gd->start_addr_sp -= sizeof(bd_t);
gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
memset(gd->bd, '\0', sizeof(bd_t));
debug("Reserving %zu Bytes for Board Info at: %08lx\n",
sizeof(bd_t), gd->start_addr_sp);
}
return 0;
}
static int setup_machine(void)
{
#ifdef CONFIG_MACH_TYPE
gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
#endif
return 0;
}
static int reserve_global_data(void)
{
gd->start_addr_sp -= sizeof(gd_t);
gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
debug("Reserving %zu Bytes for Global Data at: %08lx\n",
sizeof(gd_t), gd->start_addr_sp);
return 0;
}
static int reserve_fdt(void)
{
#ifndef CONFIG_OF_EMBED
/*
* If the device tree is sitting immediately above our image then we
* must relocate it. If it is embedded in the data section, then it
* will be relocated with other data.
*/
if (gd->fdt_blob) {
gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
gd->start_addr_sp -= gd->fdt_size;
gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
debug("Reserving %lu Bytes for FDT at: %08lx\n",
gd->fdt_size, gd->start_addr_sp);
}
#endif
return 0;
}
static int reserve_bootstage(void)
{
#ifdef CONFIG_BOOTSTAGE
int size = bootstage_get_size();
gd->start_addr_sp -= size;
gd->new_bootstage = map_sysmem(gd->start_addr_sp, size);
debug("Reserving %#x Bytes for bootstage at: %08lx\n", size,
gd->start_addr_sp);
#endif
return 0;
}
int arch_reserve_stacks(void)
{
return 0;
}
static int reserve_stacks(void)
{
/* make stack pointer 16-byte aligned */
gd->start_addr_sp -= 16;
gd->start_addr_sp &= ~0xf;
/*
* let the architecture-specific code tailor gd->start_addr_sp and
* gd->irq_sp
*/
return arch_reserve_stacks();
}
static int display_new_sp(void)
{
debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
return 0;
}
#if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
defined(CONFIG_SH)
static int setup_board_part1(void)
{
bd_t *bd = gd->bd;
/*
* Save local variables to board info struct
*/
bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
bd->bi_memsize = gd->ram_size; /* size in bytes */
#ifdef CONFIG_SYS_SRAM_BASE
bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
#endif
#if defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
#endif
#if defined(CONFIG_M68K)
bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
#endif
#if defined(CONFIG_MPC83xx)
bd->bi_immrbar = CONFIG_SYS_IMMR;
#endif
return 0;
}
#endif
#if defined(CONFIG_PPC) || defined(CONFIG_M68K)
static int setup_board_part2(void)
{
bd_t *bd = gd->bd;
bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
#if defined(CONFIG_CPM2)
bd->bi_cpmfreq = gd->arch.cpm_clk;
bd->bi_brgfreq = gd->arch.brg_clk;
bd->bi_sccfreq = gd->arch.scc_clk;
bd->bi_vco = gd->arch.vco_out;
#endif /* CONFIG_CPM2 */
#if defined(CONFIG_M68K) && defined(CONFIG_PCI)
bd->bi_pcifreq = gd->pci_clk;
#endif
#if defined(CONFIG_EXTRA_CLOCK)
bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */
bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */
#endif
return 0;
}
#endif
#ifdef CONFIG_POST
static int init_post(void)
{
post_bootmode_init();
post_run(NULL, POST_ROM | post_bootmode_get(0));
return 0;
}
#endif
static int reloc_fdt(void)
{
#ifndef CONFIG_OF_EMBED
if (gd->flags & GD_FLG_SKIP_RELOC)
return 0;
if (gd->new_fdt) {
memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
gd->fdt_blob = gd->new_fdt;
}
#endif
return 0;
}
static int reloc_bootstage(void)
{
#ifdef CONFIG_BOOTSTAGE
if (gd->flags & GD_FLG_SKIP_RELOC)
return 0;
if (gd->new_bootstage) {
int size = bootstage_get_size();
debug("Copying bootstage from %p to %p, size %x\n",
gd->bootstage, gd->new_bootstage, size);
memcpy(gd->new_bootstage, gd->bootstage, size);
gd->bootstage = gd->new_bootstage;
}
#endif
return 0;
}
static int setup_reloc(void)
{
if (gd->flags & GD_FLG_SKIP_RELOC) {
debug("Skipping relocation due to flag\n");
return 0;
}
#ifdef CONFIG_SYS_TEXT_BASE
#ifdef ARM
gd->reloc_off = gd->relocaddr - (unsigned long)__image_copy_start;
#elif defined(CONFIG_M68K)
/*
* On all ColdFire arch cpu, monitor code starts always
* just after the default vector table location, so at 0x400
*/
gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
#else
gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
#endif
#endif
memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
debug("Relocation Offset is: %08lx\n", gd->reloc_off);
debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
gd->start_addr_sp);
return 0;
}
#ifdef CONFIG_OF_BOARD_FIXUP
static int fix_fdt(void)
{
return board_fix_fdt((void *)gd->fdt_blob);
}
#endif
/* ARM calls relocate_code from its crt0.S */
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
!CONFIG_IS_ENABLED(X86_64)
static int jump_to_copy(void)
{
if (gd->flags & GD_FLG_SKIP_RELOC)
return 0;
/*
* x86 is special, but in a nice way. It uses a trampoline which
* enables the dcache if possible.
*
* For now, other archs use relocate_code(), which is implemented
* similarly for all archs. When we do generic relocation, hopefully
* we can make all archs enable the dcache prior to relocation.
*/
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
/*
* SDRAM and console are now initialised. The final stack can now
* be setup in SDRAM. Code execution will continue in Flash, but
* with the stack in SDRAM and Global Data in temporary memory
* (CPU cache)
*/
arch_setup_gd(gd->new_gd);
board_init_f_r_trampoline(gd->start_addr_sp);
#else
relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
#endif
return 0;
}
#endif
/* Record the board_init_f() bootstage (after arch_cpu_init()) */
static int initf_bootstage(void)
{
bool from_spl = IS_ENABLED(CONFIG_SPL_BOOTSTAGE) &&
IS_ENABLED(CONFIG_BOOTSTAGE_STASH);
int ret;
ret = bootstage_init(!from_spl);
if (ret)
return ret;
if (from_spl) {
const void *stash = map_sysmem(CONFIG_BOOTSTAGE_STASH_ADDR,
CONFIG_BOOTSTAGE_STASH_SIZE);
ret = bootstage_unstash(stash, CONFIG_BOOTSTAGE_STASH_SIZE);
if (ret && ret != -ENOENT) {
debug("Failed to unstash bootstage: err=%d\n", ret);
return ret;
}
}
bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
return 0;
}
static int initf_console_record(void)
{
#if defined(CONFIG_CONSOLE_RECORD) && CONFIG_VAL(SYS_MALLOC_F_LEN)
return console_record_init();
#else
return 0;
#endif
}
static int initf_dm(void)
{
#if defined(CONFIG_DM) && CONFIG_VAL(SYS_MALLOC_F_LEN)
int ret;
bootstage_start(BOOTSTATE_ID_ACCUM_DM_F, "dm_f");
ret = dm_init_and_scan(true);
bootstage_accum(BOOTSTATE_ID_ACCUM_DM_F);
if (ret)
return ret;
#endif
#ifdef CONFIG_TIMER_EARLY
ret = dm_timer_init();
if (ret)
return ret;
#endif
return 0;
}
/* Architecture-specific memory reservation */
__weak int reserve_arch(void)
{
return 0;
}
__weak int arch_cpu_init_dm(void)
{
return 0;
}
static const init_fnc_t init_sequence_f[] = {
setup_mon_len,
#ifdef CONFIG_OF_CONTROL
fdtdec_setup,
#endif
#ifdef CONFIG_TRACE
trace_early_init,
#endif
initf_malloc,
initf_bootstage, /* uses its own timer, so does not need DM */
initf_console_record,
#if defined(CONFIG_HAVE_FSP)
arch_fsp_init,
#endif
arch_cpu_init, /* basic arch cpu dependent setup */
mach_cpu_init, /* SoC/machine dependent CPU setup */
initf_dm,
arch_cpu_init_dm,
#if defined(CONFIG_BOARD_EARLY_INIT_F)
board_early_init_f,
#endif
#if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
/* get CPU and bus clocks according to the environment variable */
get_clocks, /* get CPU and bus clocks (etc.) */
#endif
#if !defined(CONFIG_M68K)
timer_init, /* initialize timer */
#endif
#if defined(CONFIG_BOARD_POSTCLK_INIT)
board_postclk_init,
#endif
env_init, /* initialize environment */
init_baud_rate, /* initialze baudrate settings */
serial_init, /* serial communications setup */
console_init_f, /* stage 1 init of console */
display_options, /* say that we are here */
display_text_info, /* show debugging info if required */
#if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SH) || \
defined(CONFIG_X86)
checkcpu,
#endif
#if defined(CONFIG_DISPLAY_CPUINFO)
print_cpuinfo, /* display cpu info (and speed) */
#endif
#if defined(CONFIG_DTB_RESELECT)
embedded_dtb_select,
#endif
#if defined(CONFIG_DISPLAY_BOARDINFO)
show_board_info,
#endif
INIT_FUNC_WATCHDOG_INIT
#if defined(CONFIG_MISC_INIT_F)
misc_init_f,
#endif
INIT_FUNC_WATCHDOG_RESET
#if defined(CONFIG_SYS_I2C)
init_func_i2c,
#endif
#if defined(CONFIG_HARD_SPI)
init_func_spi,
#endif
announce_dram_init,
dram_init, /* configure available RAM banks */
#ifdef CONFIG_POST
post_init_f,
#endif
INIT_FUNC_WATCHDOG_RESET
#if defined(CONFIG_SYS_DRAM_TEST)
testdram,
#endif /* CONFIG_SYS_DRAM_TEST */
INIT_FUNC_WATCHDOG_RESET
#ifdef CONFIG_POST
init_post,
#endif
INIT_FUNC_WATCHDOG_RESET
/*
* Now that we have DRAM mapped and working, we can
* relocate the code and continue running from DRAM.
*
* Reserve memory at end of RAM for (top down in that order):
* - area that won't get touched by U-Boot and Linux (optional)
* - kernel log buffer
* - protected RAM
* - LCD framebuffer
* - monitor code
* - board info struct
*/
setup_dest_addr,
#if defined(CONFIG_LOGBUFFER)
reserve_logbuffer,
#endif
#ifdef CONFIG_PRAM
reserve_pram,
#endif
reserve_round_4k,
#ifdef CONFIG_ARM
reserve_mmu,
#endif
reserve_video,
reserve_trace,
reserve_uboot,
reserve_malloc,
reserve_board,
setup_machine,
reserve_global_data,
reserve_fdt,
reserve_bootstage,
reserve_arch,
reserve_stacks,
dram_init_banksize,
show_dram_config,
#if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
defined(CONFIG_SH)
setup_board_part1,
#endif
#if defined(CONFIG_PPC) || defined(CONFIG_M68K)
INIT_FUNC_WATCHDOG_RESET
setup_board_part2,
#endif
display_new_sp,
#ifdef CONFIG_OF_BOARD_FIXUP
fix_fdt,
#endif
INIT_FUNC_WATCHDOG_RESET
reloc_fdt,
reloc_bootstage,
setup_reloc,
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
copy_uboot_to_ram,
do_elf_reloc_fixups,
clear_bss,
#endif
#if defined(CONFIG_XTENSA)
clear_bss,
#endif
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
!CONFIG_IS_ENABLED(X86_64)
jump_to_copy,
#endif
NULL,
};
void board_init_f(ulong boot_flags)
{
gd->flags = boot_flags;
gd->have_console = 0;
if (initcall_run_list(init_sequence_f))
hang();
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
!defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64)
/* NOTREACHED - jump_to_copy() does not return */
hang();
#endif
}
#if defined(CONFIG_X86) || defined(CONFIG_ARC)
/*
* For now this code is only used on x86.
*
* init_sequence_f_r is the list of init functions which are run when
* U-Boot is executing from Flash with a semi-limited 'C' environment.
* The following limitations must be considered when implementing an
* '_f_r' function:
* - 'static' variables are read-only
* - Global Data (gd->xxx) is read/write
*
* The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
* supported). It _should_, if possible, copy global data to RAM and
* initialise the CPU caches (to speed up the relocation process)
*
* NOTE: At present only x86 uses this route, but it is intended that
* all archs will move to this when generic relocation is implemented.
*/
static const init_fnc_t init_sequence_f_r[] = {
#if !CONFIG_IS_ENABLED(X86_64)
init_cache_f_r,
#endif
NULL,
};
void board_init_f_r(void)
{
if (initcall_run_list(init_sequence_f_r))
hang();
/*
* 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.
*/
gd->flags &= ~GD_FLG_SERIAL_READY;
#ifdef CONFIG_TIMER
gd->timer = NULL;
#endif
/*
* U-Boot has been copied into SDRAM, the BSS has been cleared etc.
* Transfer execution from Flash to RAM by calculating the address
* of the in-RAM copy of board_init_r() and calling it
*/
(board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
/* NOTREACHED - board_init_r() does not return */
hang();
}
#endif /* CONFIG_X86 */
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