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u-boot-brain/common/board_f.c
Simon Glass d59476b644 Add a simple malloc() implementation for pre-relocation 
If we are to have driver model before relocation we need to support some
way of calling memory allocation routines.

The standard malloc() is pretty complicated:

1. It uses some BSS memory for its state, and BSS is not available before
relocation

2. It supports algorithms for reducing memory fragmentation and improving
performace of free(). Before relocation we could happily just not support
free().

3. It includes about 4KB of code (Thumb 2) and 1KB of data. However since
this has been loaded anyway this is not really a problem.

The simplest way to support pre-relocation malloc() is to reserve an area
of memory and allocate it in increasing blocks as needed. This
implementation does this.

To enable it, you need to define the size of the malloc() pool as described
in the README. It will be located above the pre-relocation stack on
supported architectures.

Note that this implementation is only useful on machines which have some
memory available before dram_init() is called - this includes those that
do no DRAM init (like tegra) and those that do it in SPL (quite a few
boards). Enabling driver model preior to relocation for the rest of the
boards is left for a later exercise.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-07-23 14:05:40 +01:00

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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 <linux/compiler.h>
#include <version.h>
#include <environment.h>
#include <fdtdec.h>
#include <fs.h>
#if defined(CONFIG_CMD_IDE)
#include <ide.h>
#endif
#include <i2c.h>
#include <initcall.h>
#include <logbuff.h>
/* TODO: Can we move these into arch/ headers? */
#ifdef CONFIG_8xx
#include <mpc8xx.h>
#endif
#ifdef CONFIG_5xx
#include <mpc5xx.h>
#endif
#ifdef CONFIG_MPC5xxx
#include <mpc5xxx.h>
#endif
#include <os.h>
#include <post.h>
#include <spi.h>
#include <status_led.h>
#include <trace.h>
#include <watchdog.h>
#include <asm/errno.h>
#include <asm/io.h>
#ifdef CONFIG_MP
#include <asm/mp.h>
#endif
#include <asm/sections.h>
#ifdef CONFIG_X86
#include <asm/init_helpers.h>
#include <asm/relocate.h>
#endif
#ifdef CONFIG_SANDBOX
#include <asm/state.h>
#endif
#include <linux/compiler.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
/*
* sjg: 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...
*/
/*
* Could the CONFIG_SPL_BUILD infection become a flag in gd?
*/
#if defined(CONFIG_WATCHDOG)
static int init_func_watchdog_init(void)
{
puts(" Watchdog enabled\n");
WATCHDOG_RESET();
return 0;
}
int init_func_watchdog_reset(void)
{
WATCHDOG_RESET();
return 0;
}
#endif /* CONFIG_WATCHDOG */
void __board_add_ram_info(int use_default)
{
/* please define platform specific board_add_ram_info() */
}
void board_add_ram_info(int)
__attribute__ ((weak, alias("__board_add_ram_info")));
static int init_baud_rate(void)
{
gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
return 0;
}
static int display_text_info(void)
{
#ifndef CONFIG_SANDBOX
ulong bss_start, bss_end;
bss_start = (ulong)&__bss_start;
bss_end = (ulong)&__bss_end;
debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n",
CONFIG_SYS_TEXT_BASE, bss_start, bss_end);
#endif
#ifdef CONFIG_MODEM_SUPPORT
debug("Modem Support enabled\n");
#endif
#ifdef CONFIG_USE_IRQ
debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
#endif
return 0;
}
static int announce_dram_init(void)
{
puts("DRAM: ");
return 0;
}
#if defined(CONFIG_MIPS) || defined(CONFIG_PPC)
static int init_func_ram(void)
{
#ifdef CONFIG_BOARD_TYPES
int board_type = gd->board_type;
#else
int board_type = 0; /* use dummy arg */
#endif
gd->ram_size = initdram(board_type);
if (gd->ram_size > 0)
return 0;
puts("*** failed ***\n");
return 1;
}
#endif
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: %08lx ", i, 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;
}
void __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
}
void dram_init_banksize(void)
__attribute__((weak, alias("__dram_init_banksize")));
#if defined(CONFIG_HARD_I2C) || 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
__maybe_unused
static int zero_global_data(void)
{
memset((void *)gd, '\0', sizeof(gd_t));
return 0;
}
static int setup_mon_len(void)
{
#ifdef __ARM__
gd->mon_len = (ulong)&__bss_end - (ulong)_start;
#elif defined(CONFIG_SANDBOX)
gd->mon_len = (ulong)&_end - (ulong)_init;
#else
/* 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;
}
#ifdef CONFIG_OF_HOSTFILE
static int read_fdt_from_file(void)
{
struct sandbox_state *state = state_get_current();
const char *fname = state->fdt_fname;
void *blob;
ssize_t size;
int err;
int fd;
blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
if (!state->fdt_fname) {
err = fdt_create_empty_tree(blob, 256);
if (!err)
goto done;
printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
return -EINVAL;
}
size = os_get_filesize(fname);
if (size < 0) {
printf("Failed to file FDT file '%s'\n", fname);
return -ENOENT;
}
fd = os_open(fname, OS_O_RDONLY);
if (fd < 0) {
printf("Failed to open FDT file '%s'\n", fname);
return -EACCES;
}
if (os_read(fd, blob, size) != size) {
os_close(fd);
return -EIO;
}
os_close(fd);
done:
gd->fdt_blob = blob;
return 0;
}
#endif
#ifdef CONFIG_SANDBOX
static int setup_ram_buf(void)
{
struct sandbox_state *state = state_get_current();
gd->arch.ram_buf = state->ram_buf;
gd->ram_size = state->ram_size;
return 0;
}
#endif
static int setup_fdt(void)
{
#ifdef CONFIG_OF_EMBED
/* Get a pointer to the FDT */
gd->fdt_blob = __dtb_dt_begin;
#elif defined CONFIG_OF_SEPARATE
/* FDT is at end of image */
gd->fdt_blob = (ulong *)&_end;
#elif defined(CONFIG_OF_HOSTFILE)
if (read_fdt_from_file()) {
puts("Failed to read control FDT\n");
return -1;
}
#endif
/* Allow the early environment to override the fdt address */
gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
(uintptr_t)gd->fdt_blob);
return 0;
}
/* Get the top of usable RAM */
__weak ulong board_get_usable_ram_top(ulong total_size)
{
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) && !defined(CONFIG_ALT_LB_ADDR)
static int reserve_logbuffer(void)
{
/* reserve kernel log buffer */
gd->relocaddr -= LOGBUFF_RESERVE;
debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
gd->relocaddr);
return 0;
}
#endif
#ifdef CONFIG_PRAM
/* reserve protected RAM */
static int reserve_pram(void)
{
ulong reg;
reg = getenv_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;
}
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
defined(CONFIG_ARM)
static int reserve_mmu(void)
{
/* 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);
return 0;
}
#endif
#ifdef CONFIG_LCD
static int reserve_lcd(void)
{
#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 */
return 0;
}
#endif /* CONFIG_LCD */
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;
}
#if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
&& !defined(CONFIG_ARM) && !defined(CONFIG_X86)
static int reserve_video(void)
{
/* reserve memory for video display (always full pages) */
gd->relocaddr = video_setmem(gd->relocaddr);
gd->fb_base = gd->relocaddr;
return 0;
}
#endif
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);
#ifdef CONFIG_E500
/* 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;
}
#ifndef CONFIG_SPL_BUILD
/* 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)
{
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;
}
#endif
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)
{
/*
* If the device tree is sitting immediate 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);
}
return 0;
}
static int reserve_stacks(void)
{
#ifdef CONFIG_SPL_BUILD
# ifdef CONFIG_ARM
gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */
gd->irq_sp = gd->start_addr_sp;
# endif
#else
# ifdef CONFIG_PPC
ulong *s;
# endif
/* setup stack pointer for exceptions */
gd->start_addr_sp -= 16;
gd->start_addr_sp &= ~0xf;
gd->irq_sp = gd->start_addr_sp;
/*
* Handle architecture-specific things here
* TODO(sjg@chromium.org): Perhaps create arch_reserve_stack()
* to handle this and put in arch/xxx/lib/stack.c
*/
# if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
# ifdef CONFIG_USE_IRQ
gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
/* 8-byte alignment for ARM ABI compliance */
gd->start_addr_sp &= ~0x07;
# endif
/* leave 3 words for abort-stack, plus 1 for alignment */
gd->start_addr_sp -= 16;
# elif defined(CONFIG_PPC)
/* Clear initial stack frame */
s = (ulong *) gd->start_addr_sp;
*s = 0; /* Terminate back chain */
*++s = 0; /* NULL return address */
# endif /* Architecture specific code */
return 0;
#endif
}
static int display_new_sp(void)
{
debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
return 0;
}
#ifdef CONFIG_PPC
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_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \
defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
#endif
#if defined(CONFIG_MPC5xxx)
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;
}
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_MPC512X)
bd->bi_ipsfreq = gd->arch.ips_clk;
#endif /* CONFIG_MPC512X */
#if defined(CONFIG_MPC5xxx)
bd->bi_ipbfreq = gd->arch.ipb_clk;
bd->bi_pcifreq = gd->pci_clk;
#endif /* CONFIG_MPC5xxx */
return 0;
}
#endif
#ifdef CONFIG_SYS_EXTBDINFO
static int setup_board_extra(void)
{
bd_t *bd = gd->bd;
strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
sizeof(bd->bi_r_version));
bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
bd->bi_plb_busfreq = gd->bus_clk;
#if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
bd->bi_pci_busfreq = get_PCI_freq();
bd->bi_opbfreq = get_OPB_freq();
#elif defined(CONFIG_XILINX_405)
bd->bi_pci_busfreq = get_PCI_freq();
#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 setup_dram_config(void)
{
/* Ram is board specific, so move it to board code ... */
dram_init_banksize();
return 0;
}
static int reloc_fdt(void)
{
if (gd->new_fdt) {
memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
gd->fdt_blob = gd->new_fdt;
}
return 0;
}
static int setup_reloc(void)
{
gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
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;
}
/* ARM calls relocate_code from its crt0.S */
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
static int jump_to_copy(void)
{
/*
* 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.
*/
#ifdef CONFIG_X86
/*
* 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)
*/
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 mark_bootstage(void)
{
bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
return 0;
}
static int initf_malloc(void)
{
#ifdef CONFIG_SYS_MALLOC_F_LEN
assert(gd->malloc_base); /* Set up by crt0.S */
gd->malloc_limit = gd->malloc_base + CONFIG_SYS_MALLOC_F_LEN;
gd->malloc_ptr = 0;
#endif
return 0;
}
static init_fnc_t init_sequence_f[] = {
#ifdef CONFIG_SANDBOX
setup_ram_buf,
#endif
setup_mon_len,
setup_fdt,
trace_early_init,
#if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
/* TODO: can this go into arch_cpu_init()? */
probecpu,
#endif
arch_cpu_init, /* basic arch cpu dependent setup */
#ifdef CONFIG_X86
cpu_init_f, /* TODO(sjg@chromium.org): remove */
# ifdef CONFIG_OF_CONTROL
find_fdt, /* TODO(sjg@chromium.org): remove */
# endif
#endif
mark_bootstage,
#ifdef CONFIG_OF_CONTROL
fdtdec_check_fdt,
#endif
#if defined(CONFIG_BOARD_EARLY_INIT_F)
board_early_init_f,
#endif
/* TODO: can any of this go into arch_cpu_init()? */
#if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
get_clocks, /* get CPU and bus clocks (etc.) */
#if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
&& !defined(CONFIG_TQM885D)
adjust_sdram_tbs_8xx,
#endif
/* TODO: can we rename this to timer_init()? */
init_timebase,
#endif
#if defined(CONFIG_ARM) || defined(CONFIG_MIPS)
timer_init, /* initialize timer */
#endif
#ifdef CONFIG_SYS_ALLOC_DPRAM
#if !defined(CONFIG_CPM2)
dpram_init,
#endif
#endif
#if defined(CONFIG_BOARD_POSTCLK_INIT)
board_postclk_init,
#endif
#ifdef CONFIG_FSL_ESDHC
get_clocks,
#endif
env_init, /* initialize environment */
#if defined(CONFIG_8xx_CPUCLK_DEFAULT)
/* get CPU and bus clocks according to the environment variable */
get_clocks_866,
/* adjust sdram refresh rate according to the new clock */
sdram_adjust_866,
init_timebase,
#endif
initf_malloc,
init_baud_rate, /* initialze baudrate settings */
serial_init, /* serial communications setup */
console_init_f, /* stage 1 init of console */
#ifdef CONFIG_SANDBOX
sandbox_early_getopt_check,
#endif
#ifdef CONFIG_OF_CONTROL
fdtdec_prepare_fdt,
#endif
display_options, /* say that we are here */
display_text_info, /* show debugging info if required */
#if defined(CONFIG_MPC8260)
prt_8260_rsr,
prt_8260_clks,
#endif /* CONFIG_MPC8260 */
#if defined(CONFIG_MPC83xx)
prt_83xx_rsr,
#endif
#ifdef CONFIG_PPC
checkcpu,
#endif
print_cpuinfo, /* display cpu info (and speed) */
#if defined(CONFIG_MPC5xxx)
prt_mpc5xxx_clks,
#endif /* CONFIG_MPC5xxx */
#if defined(CONFIG_DISPLAY_BOARDINFO)
checkboard, /* display board info */
#endif
INIT_FUNC_WATCHDOG_INIT
#if defined(CONFIG_MISC_INIT_F)
misc_init_f,
#endif
INIT_FUNC_WATCHDOG_RESET
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
init_func_i2c,
#endif
#if defined(CONFIG_HARD_SPI)
init_func_spi,
#endif
#ifdef CONFIG_X86
dram_init_f, /* configure available RAM banks */
calculate_relocation_address,
#endif
announce_dram_init,
/* TODO: unify all these dram functions? */
#ifdef CONFIG_ARM
dram_init, /* configure available RAM banks */
#endif
#if defined(CONFIG_MIPS) || defined(CONFIG_PPC)
init_func_ram,
#endif
#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) && !defined(CONFIG_ALT_LB_ADDR)
reserve_logbuffer,
#endif
#ifdef CONFIG_PRAM
reserve_pram,
#endif
reserve_round_4k,
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
defined(CONFIG_ARM)
reserve_mmu,
#endif
#ifdef CONFIG_LCD
reserve_lcd,
#endif
reserve_trace,
/* TODO: Why the dependency on CONFIG_8xx? */
#if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
&& !defined(CONFIG_ARM) && !defined(CONFIG_X86)
reserve_video,
#endif
reserve_uboot,
#ifndef CONFIG_SPL_BUILD
reserve_malloc,
reserve_board,
#endif
setup_machine,
reserve_global_data,
reserve_fdt,
reserve_stacks,
setup_dram_config,
show_dram_config,
#ifdef CONFIG_PPC
setup_board_part1,
INIT_FUNC_WATCHDOG_RESET
setup_board_part2,
#endif
display_new_sp,
#ifdef CONFIG_SYS_EXTBDINFO
setup_board_extra,
#endif
INIT_FUNC_WATCHDOG_RESET
reloc_fdt,
setup_reloc,
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
jump_to_copy,
#endif
NULL,
};
void board_init_f(ulong boot_flags)
{
#ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
/*
* For some archtectures, global data is initialized and used before
* calling this function. The data should be preserved. For others,
* CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
* here to host global data until relocation.
*/
gd_t data;
gd = &data;
/*
* Clear global data before it is accessed at debug print
* in initcall_run_list. Otherwise the debug print probably
* get the wrong vaule of gd->have_console.
*/
zero_global_data();
#endif
gd->flags = boot_flags;
gd->have_console = 0;
if (initcall_run_list(init_sequence_f))
hang();
#if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
/* NOTREACHED - jump_to_copy() does not return */
hang();
#endif
}
#ifdef CONFIG_X86
/*
* 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 init_fnc_t init_sequence_f_r[] = {
init_cache_f_r,
copy_uboot_to_ram,
clear_bss,
do_elf_reloc_fixups,
NULL,
};
void board_init_f_r(void)
{
if (initcall_run_list(init_sequence_f_r))
hang();
/*
* 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, gd->relocaddr);
/* NOTREACHED - board_init_r() does not return */
hang();
}
#endif /* CONFIG_X86 */
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