static int setup_dram_config(void)
{
/* Ram is board specific, so move it to board code ... */
dram_init_banksize();
return 0;
}
void board_init_f(ulong bootflag)
{
init_fnc_t **init_fnc_ptr;
uchar *mem;
unsigned long addr_sp, addr, size;
gd = &gd_mem;
assert(gd);
memset((void *)gd, 0, sizeof(gd_t));
#if defined(CONFIG_OF_EMBED)
/* Get a pointer to the FDT */
gd->fdt_blob = _binary_dt_dtb_start;
#elif defined(CONFIG_OF_SEPARATE)
/* FDT is at end of image */
gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
#endif
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0)
hang();
}
size = CONFIG_SYS_SDRAM_SIZE;
mem = os_malloc(CONFIG_SYS_SDRAM_SIZE);
assert(mem);
gd->ram_buf = mem;
addr = (ulong)(mem + size);
/*
* reserve memory for malloc() arena
*/
addr_sp = addr - TOTAL_MALLOC_LEN;
debug("Reserving %dk for malloc() at: %08lx\n",
TOTAL_MALLOC_LEN >> 10, addr_sp);
/*
* (permanently) allocate a Board Info struct
* and a permanent copy of the "global" data
*/
addr_sp -= sizeof(bd_t);
gd->bd = (bd_t *) addr_sp;
debug("Reserving %zu Bytes for Board Info at: %08lx\n",
sizeof(bd_t), addr_sp);
/* Ram ist board specific, so move it to board code ... */
dram_init_banksize();
display_dram_config(); /* and display it */
/* We don't relocate, so just run the post-relocation code */
board_init_r(NULL, 0);
/* NOTREACHED - no way out of command loop except booting */
}
void board_init_f(ulong dummy)
{
/* Clear global data */
memset((void *)gd, 0, sizeof(gd_t));
board_early_init_f();
timer_init();
#ifdef CONFIG_ARCH_LS2080A
env_init();
#endif
get_clocks();
preloader_console_init();
spl_set_bd();
#ifdef CONFIG_SPL_I2C_SUPPORT
i2c_init_all();
#endif
dram_init();
#ifdef CONFIG_SPL_FSL_LS_PPA
#ifndef CONFIG_SYS_MEM_RESERVE_SECURE
#error Need secure RAM for PPA
#endif
/*
* Secure memory location is determined in dram_init_banksize().
* gd->ram_size is deducted by the size of secure ram.
*/
dram_init_banksize();
/*
* After dram_init_bank_size(), we know U-Boot only uses the first
* memory bank regardless how big the memory is.
*/
gd->ram_top = gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size;
/*
* If PPA is loaded, U-Boot will resume running at EL2.
* Cache and MMU will be enabled. Need a place for TLB.
* U-Boot will be relocated to the end of available memory
* in first bank. At this point, we cannot know how much
* memory U-Boot uses. Put TLB table lower by SPL_TLB_SETBACK
* to avoid overlapping. As soon as the RAM version U-Boot sets
* up new MMU, this space is no longer needed.
*/
gd->ram_top -= SPL_TLB_SETBACK;
gd->arch.tlb_size = PGTABLE_SIZE;
gd->arch.tlb_addr = (gd->ram_top - gd->arch.tlb_size) & ~(0x10000 - 1);
gd->arch.tlb_allocated = gd->arch.tlb_addr;
#endif /* CONFIG_SPL_FSL_LS_PPA */
}
void board_init_f(ulong bootflag)
{
bd_t *bd;
init_fnc_t **init_fnc_ptr;
gd_t *id;
ulong addr, addr_sp;
#ifdef CONFIG_PRAM
ulong reg;
#endif
void *new_fdt = NULL;
size_t fdt_size = 0;
memset((void *)gd, 0, sizeof(gd_t));
gd->mon_len = (ulong)&__bss_end - (ulong)_start;
#ifdef CONFIG_OF_EMBED
/* Get a pointer to the FDT */
gd->fdt_blob = __dtb_db_begin;
#elif defined CONFIG_OF_SEPARATE
/* FDT is at end of image */
gd->fdt_blob = &_end;
#endif
/* Allow the early environment to override the fdt address */
gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
(uintptr_t)gd->fdt_blob);
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0) {
hang ();
}
}
#ifdef CONFIG_OF_CONTROL
/* For now, put this check after the console is ready */
if (fdtdec_prepare_fdt()) {
panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
"doc/README.fdt-control");
}
#endif
debug("monitor len: %08lX\n", gd->mon_len);
/*
* Ram is setup, size stored in gd !!
*/
debug("ramsize: %08lX\n", 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
addr = CONFIG_SYS_SDRAM_BASE + get_effective_memsize();
#ifdef CONFIG_LOGBUFFER
#ifndef CONFIG_ALT_LB_ADDR
/* reserve kernel log buffer */
addr -= (LOGBUFF_RESERVE);
debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
addr);
#endif
#endif
#ifdef CONFIG_PRAM
/*
* reserve protected RAM
*/
reg = getenv_ulong("pram", 10, CONFIG_PRAM);
addr -= (reg << 10); /* size is in kB */
debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
#endif /* CONFIG_PRAM */
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
/* reserve TLB table */
gd->arch.tlb_size = PGTABLE_SIZE;
addr -= gd->arch.tlb_size;
/* round down to next 64 kB limit */
addr &= ~(0x10000 - 1);
gd->arch.tlb_addr = addr;
debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
#endif
/* round down to next 4 kB limit */
addr &= ~(4096 - 1);
debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
#ifdef CONFIG_LCD
#ifdef CONFIG_FB_ADDR
gd->fb_base = CONFIG_FB_ADDR;
#else
/* reserve memory for LCD display (always full pages) */
addr = lcd_setmem(addr);
gd->fb_base = addr;
#endif /* CONFIG_FB_ADDR */
#endif /* CONFIG_LCD */
/*
* reserve memory for U-Boot code, data & bss
* round down to next 4 kB limit
*/
addr -= gd->mon_len;
addr &= ~(4096 - 1);
debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
#ifndef CONFIG_SPL_BUILD
/*
* reserve memory for malloc() arena
*/
addr_sp = addr - TOTAL_MALLOC_LEN;
debug("Reserving %dk for malloc() at: %08lx\n",
TOTAL_MALLOC_LEN >> 10, addr_sp);
/*
* (permanently) allocate a Board Info struct
* and a permanent copy of the "global" data
*/
addr_sp -= sizeof (bd_t);
bd = (bd_t *) addr_sp;
gd->bd = bd;
debug("Reserving %zu Bytes for Board Info at: %08lx\n",
sizeof (bd_t), addr_sp);
#ifdef CONFIG_MACH_TYPE
gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
#endif
addr_sp -= sizeof (gd_t);
id = (gd_t *) addr_sp;
debug("Reserving %zu Bytes for Global Data at: %08lx\n",
sizeof (gd_t), addr_sp);
#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
/*
* 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) {
fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
addr_sp -= fdt_size;
new_fdt = (void *)addr_sp;
debug("Reserving %zu Bytes for FDT at: %08lx\n",
fdt_size, addr_sp);
}
#endif
#ifndef CONFIG_ARM64
/* setup stackpointer for exeptions */
gd->irq_sp = addr_sp;
#ifdef CONFIG_USE_IRQ
addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
#endif
/* leave 3 words for abort-stack */
addr_sp -= 12;
/* 8-byte alignment for ABI compliance */
addr_sp &= ~0x07;
#else /* CONFIG_ARM64 */
/* 16-byte alignment for ABI compliance */
addr_sp &= ~0x0f;
#endif /* CONFIG_ARM64 */
#else
addr_sp += 128; /* leave 32 words for abort-stack */
gd->irq_sp = addr_sp;
#endif
debug("New Stack Pointer is: %08lx\n", addr_sp);
#ifdef CONFIG_POST
post_bootmode_init();
post_run(NULL, POST_ROM | post_bootmode_get(0));
#endif
gd->bd->bi_baudrate = gd->baudrate;
/* Ram ist board specific, so move it to board code ... */
dram_init_banksize();
display_dram_config(); /* and display it */
gd->relocaddr = addr;
gd->start_addr_sp = addr_sp;
gd->reloc_off = addr - (ulong)&_start;
debug("relocation Offset is: %08lx\n", gd->reloc_off);
if (new_fdt) {
memcpy(new_fdt, gd->fdt_blob, fdt_size);
gd->fdt_blob = new_fdt;
}
memcpy(id, (void *)gd, sizeof(gd_t));
}
void board_init_f(ulong bootflag)
{
bd_t *bd;
init_fnc_t **init_fnc_ptr;
gd_t *id;
ulong addr, addr_sp;
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
/* compiler optimization barrier needed for GCC >= 3.4 */
__asm__ __volatile__("": : :"memory");
memset((void *)gd, 0, sizeof(gd_t));
gd->mon_len = _bss_end_ofs;
#ifdef CONFIG_MACH_TYPE
gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
#endif
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0) {
hang ();
}
}
debug("monitor len: %08lX\n", gd->mon_len);
/*
* Ram is setup, size stored in gd !!
*/
debug("ramsize: %08lX\n", 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
addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
#ifdef CONFIG_LOGBUFFER
#ifndef CONFIG_ALT_LB_ADDR
/* reserve kernel log buffer */
addr -= (LOGBUFF_RESERVE);
debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
addr);
#endif
#endif
#ifdef CONFIG_PRAM
/*
* reserve protected RAM
*/
i = getenv_r("pram", (char *)tmp, sizeof(tmp));
reg = (i > 0) ? simple_strtoul((const char *)tmp, NULL, 10) :
CONFIG_PRAM;
addr -= (reg << 10); /* size is in kB */
debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
#endif /* CONFIG_PRAM */
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
/* reserve TLB table */
addr -= (4096 * 4);
/* round down to next 64 kB limit */
addr &= ~(0x10000 - 1);
gd->tlb_addr = addr;
debug("TLB table at: %08lx\n", addr);
#endif
/* round down to next 4 kB limit */
addr &= ~(4096 - 1);
debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
#ifdef CONFIG_LCD
#ifdef CONFIG_FB_ADDR
gd->fb_base = CONFIG_FB_ADDR;
#else
/* reserve memory for LCD display (always full pages) */
addr = lcd_setmem(addr);
gd->fb_base = addr;
#endif /* CONFIG_FB_ADDR */
#endif /* CONFIG_LCD */
/*
* reserve memory for U-Boot code, data & bss
* round down to next 4 kB limit
*/
addr -= gd->mon_len;
addr &= ~(4096 - 1);
debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
#ifndef CONFIG_SPL_BUILD
/*
* reserve memory for malloc() arena
*/
addr_sp = addr - TOTAL_MALLOC_LEN;
debug("Reserving %dk for malloc() at: %08lx\n",
TOTAL_MALLOC_LEN >> 10, addr_sp);
/*
* (permanently) allocate a Board Info struct
* and a permanent copy of the "global" data
*/
addr_sp -= sizeof (bd_t);
bd = (bd_t *) addr_sp;
gd->bd = bd;
debug("Reserving %zu Bytes for Board Info at: %08lx\n",
sizeof (bd_t), addr_sp);
addr_sp -= sizeof (gd_t);
id = (gd_t *) addr_sp;
debug("Reserving %zu Bytes for Global Data at: %08lx\n",
sizeof (gd_t), addr_sp);
/* setup stackpointer for exeptions */
gd->irq_sp = addr_sp;
#ifdef CONFIG_USE_IRQ
addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
#endif
/* leave 3 words for abort-stack */
addr_sp -= 12;
/* 8-byte alignment for ABI compliance */
addr_sp &= ~0x07;
#else
addr_sp += 128; /* leave 32 words for abort-stack */
gd->irq_sp = addr_sp;
#endif
debug("New Stack Pointer is: %08lx\n", addr_sp);
#ifdef CONFIG_POST
post_bootmode_init();
post_run(NULL, POST_ROM | post_bootmode_get(0));
#endif
gd->bd->bi_baudrate = gd->baudrate;
/* Ram ist board specific, so move it to board code ... */
dram_init_banksize();
display_dram_config(); /* and display it */
gd->relocaddr = addr;
gd->start_addr_sp = addr_sp;
gd->reloc_off = addr - _TEXT_BASE;
debug("relocation Offset is: %08lx\n", gd->reloc_off);
memcpy(id, (void *)gd, sizeof(gd_t));
relocate_code(addr_sp, id, addr);
/* NOTREACHED - relocate_code() does not return */
}
void board_init_r(gd_t *dummy1, ulong dummy2)
{
u32 spl_boot_list[] = {
BOOT_DEVICE_NONE,
BOOT_DEVICE_NONE,
BOOT_DEVICE_NONE,
BOOT_DEVICE_NONE,
BOOT_DEVICE_NONE,
};
struct spl_image_info spl_image;
debug(">>spl:board_init_r()\n");
spl_set_bd();
#ifdef CONFIG_SPL_OS_BOOT
dram_init_banksize();
#endif
#if defined(CONFIG_SYS_SPL_MALLOC_START)
mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
CONFIG_SYS_SPL_MALLOC_SIZE);
gd->flags |= GD_FLG_FULL_MALLOC_INIT;
#endif
if (!(gd->flags & GD_FLG_SPL_INIT)) {
if (spl_init())
hang();
}
#if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6)
/*
* timer_init() does not exist on PPC systems. The timer is initialized
* and enabled (decrementer) in interrupt_init() here.
*/
timer_init();
#endif
#ifdef CONFIG_SPL_BOARD_INIT
spl_board_init();
#endif
memset(&spl_image, '\0', sizeof(spl_image));
#ifdef CONFIG_SYS_SPL_ARGS_ADDR
spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
#endif
board_boot_order(spl_boot_list);
if (boot_from_devices(&spl_image, spl_boot_list,
ARRAY_SIZE(spl_boot_list))) {
puts("SPL: failed to boot from all boot devices\n");
hang();
}
#ifdef CONFIG_CPU_V7M
spl_image.entry_point |= 0x1;
#endif
switch (spl_image.os) {
case IH_OS_U_BOOT:
debug("Jumping to U-Boot\n");
break;
#if CONFIG_IS_ENABLED(ATF)
case IH_OS_ARM_TRUSTED_FIRMWARE:
debug("Jumping to U-Boot via ARM Trusted Firmware\n");
spl_invoke_atf(&spl_image);
break;
#endif
#ifdef CONFIG_SPL_OS_BOOT
case IH_OS_LINUX:
debug("Jumping to Linux\n");
spl_fixup_fdt();
spl_board_prepare_for_linux();
jump_to_image_linux(&spl_image);
#endif
default:
debug("Unsupported OS image.. Jumping nevertheless..\n");
}
#if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
gd->malloc_ptr / 1024);
#endif
#ifdef CONFIG_BOOTSTAGE_STASH
int ret;
bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl");
ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
CONFIG_BOOTSTAGE_STASH_SIZE);
if (ret)
debug("Failed to stash bootstage: err=%d\n", ret);
#endif
debug("loaded - jumping to U-Boot...\n");
spl_board_prepare_for_boot();
jump_to_image_no_args(&spl_image);
}
void board_init_f(ulong board_type)
{
gd_t gd_data;
gd_t *new_gd;
bd_t *bd;
unsigned long *new_sp;
unsigned long monitor_len;
unsigned long monitor_addr;
unsigned long addr;
/* Initialize the global data pointer */
memset(&gd_data, 0, sizeof(gd_data));
gd = &gd_data;
/* Perform initialization sequence */
board_early_init_f();
arch_cpu_init();
board_postclk_init();
env_init();
init_baudrate();
serial_init();
console_init_f();
display_banner();
dram_init();
/* If we have no SDRAM, we can't go on */
if (gd->ram_size <= 0)
panic("No working SDRAM available\n");
/*
* 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):
* - u-boot image
* - heap for malloc()
* - board info struct
* - global data struct
* - stack
*/
addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
monitor_len = (char *)(&__bss_end) - _text;
/*
* Reserve memory for u-boot code, data and bss.
* Round down to next 4 kB limit.
*/
addr -= monitor_len;
addr &= ~(4096UL - 1);
monitor_addr = addr;
/* Reserve memory for malloc() */
addr -= CONFIG_SYS_MALLOC_LEN;
#ifdef CONFIG_LCD
#ifdef CONFIG_FB_ADDR
printf("LCD: Frame buffer allocated at preset 0x%08x\n",
CONFIG_FB_ADDR);
gd->fb_base = CONFIG_FB_ADDR;
#else
addr = lcd_setmem(addr);
printf("LCD: Frame buffer allocated at 0x%08lx\n", addr);
gd->fb_base = addr;
#endif /* CONFIG_FB_ADDR */
#endif /* CONFIG_LCD */
/* Allocate a Board Info struct on a word boundary */
addr -= sizeof(bd_t);
addr &= ~3UL;
gd->bd = bd = (bd_t *)addr;
/* Allocate a new global data copy on a 8-byte boundary. */
addr -= sizeof(gd_t);
addr &= ~7UL;
new_gd = (gd_t *)addr;
/* And finally, a new, bigger stack. */
new_sp = (unsigned long *)addr;
gd->start_addr_sp = addr;
*(--new_sp) = 0;
*(--new_sp) = 0;
dram_init_banksize();
memcpy(new_gd, gd, sizeof(gd_t));
relocate_code((unsigned long)new_sp, new_gd, monitor_addr);
}
/*
划分系统内存使用
初始化设备,开发板,打印提示信息
*/
void board_init_f(ulong bootflag)
{
bd_t *bd;
init_fnc_t **init_fnc_ptr;
gd_t *id;
ulong addr, addr_sp;/*addr将指向用户正常访问的最高地址+1的位置；addr_sp指向堆起始位置 */
#ifdef CONFIG_PRAM
ulong reg;
#endif
bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
/* compiler optimization barrier needed for GCC >= 3.4 */
__asm__ __volatile__("": : :"memory");//告诉编译器内存已被修改
memset((void *)gd, 0, sizeof(gd_t));
gd->mon_len = _bss_end_ofs;// data & bss段大小总和
#ifdef CONFIG_OF_EMBED
/* Get a pointer to the FDT */
gd->fdt_blob = _binary_dt_dtb_start;
#elif defined CONFIG_OF_SEPARATE
/* FDT is at end of image */
gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
#endif
/* Allow the early environment to override the fdt address */
gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
(uintptr_t)gd->fdt_blob);
//执行init_fnc_ptr函数指针数组中的各个初始化函数
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0) { //如果板的初始化函数序列出错，死循环
hang ();
}
}
#ifdef CONFIG_OF_CONTROL
/* For now, put this check after the console is ready */
if (fdtdec_prepare_fdt()) {
panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
"doc/README.fdt-control");
}
#endif
debug("monitor len: %08lX\n", gd->mon_len);
/*
* Ram is setup, size stored in gd !!
*/
debug("ramsize: %08lX\n", 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
/*设置addr = SDRAM起始地址+SDRAM_SIZE*/
addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
#ifdef CONFIG_LOGBUFFER
#ifndef CONFIG_ALT_LB_ADDR
/* reserve kernel log buffer */
addr -= (LOGBUFF_RESERVE);
debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
addr);
#endif
#endif
#ifdef CONFIG_PRAM
/*
* reserve protected RAM
*/
reg = getenv_ulong("pram", 10, CONFIG_PRAM);
addr -= (reg << 10); /* size is in kB */
debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
#endif /* CONFIG_PRAM */
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
/* reserve TLB table */
addr -= (4096 * 4);
/* round down to next 64 kB limit */
addr &= ~(0x10000 - 1);
gd->tlb_addr = addr;
debug("TLB table at: %08lx\n", addr);
#endif
/* round down to next 4 kB limit */
addr &= ~(4096 - 1);
debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
#ifdef CONFIG_LCD
#ifdef CONFIG_FB_ADDR
gd->fb_base = CONFIG_FB_ADDR;
#else
/* reserve memory for LCD display (always full pages) */
addr = lcd_setmem(addr);
gd->fb_base = addr;
#endif /* CONFIG_FB_ADDR */
#endif /* CONFIG_LCD */
/*
* reserve memory for U-Boot code, data & bss
* round down to next 4 kB limit
*/
addr -= gd->mon_len;
addr &= ~(4096 - 1);
debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
#ifndef CONFIG_SPL_BUILD
/*
* reserve memory for malloc() arena
*/
addr_sp = addr - TOTAL_MALLOC_LEN;
debug("Reserving %dk for malloc() at: %08lx\n",
TOTAL_MALLOC_LEN >> 10, addr_sp);
/*
* (permanently) allocate a Board Info struct
* and a permanent copy of the "global" data
*/
addr_sp -= sizeof (bd_t);
bd = (bd_t *) addr_sp;
gd->bd = bd;
debug("Reserving %zu Bytes for Board Info at: %08lx\n",
sizeof (bd_t), addr_sp);
#ifdef CONFIG_MACH_TYPE
gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
#endif
addr_sp -= sizeof (gd_t);/*为gd在DRAM中保留存储空间*/
id = (gd_t *) addr_sp;
debug("Reserving %zu Bytes for Global Data at: %08lx\n",
sizeof (gd_t), addr_sp);
/* setup stackpointer for exeptions */
gd->irq_sp = addr_sp;
#ifdef CONFIG_USE_IRQ
addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
#endif
/* leave 3 words for abort-stack */
addr_sp -= 12;
/* 8-byte alignment for ABI compliance */
addr_sp &= ~0x07;
#else
addr_sp += 128; /* leave 32 words for abort-stack */
gd->irq_sp = addr_sp;
#endif
debug("New Stack Pointer is: %08lx\n", addr_sp);
#ifdef CONFIG_POST
post_bootmode_init();
post_run(NULL, POST_ROM | post_bootmode_get(0));
#endif
gd->bd->bi_baudrate = gd->baudrate;
/* Ram ist board specific, so move it to board code ... */
dram_init_banksize();
display_dram_config(); /* and display it */
gd->relocaddr = addr;
gd->start_addr_sp = addr_sp;
gd->reloc_off = addr - _TEXT_BASE;
debug("relocation Offset is: %08lx\n", gd->reloc_off);
memcpy(id, (void *)gd, sizeof(gd_t));
relocate_code(addr_sp, id, addr);
/* NOTREACHED - relocate_code() does not return */
}
void board_init_f(ulong bootflag)
{
bd_t *bd;
init_fnc_t **init_fnc_ptr;
gd_t *id;
ulong addr, addr_sp;
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) ((CONFIG_SYS_INIT_SP_ADDR) & ~0x07);
memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
gd->mon_len = (unsigned int)(&__bss_end__) - (unsigned int)(&_start);
for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
if ((*init_fnc_ptr)() != 0)
hang();
}
debug("monitor len: %08lX\n", gd->mon_len);
/*
* Ram is setup, size stored in gd !!
*/
debug("ramsize: %08lX\n", gd->ram_size);
addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
#if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
/* reserve TLB table */
addr -= (4096 * 4);
/* round down to next 64 kB limit */
addr &= ~(0x10000 - 1);
gd->tlb_addr = addr;
debug("TLB table at: %08lx\n", addr);
#endif
/* round down to next 4 kB limit */
addr &= ~(4096 - 1);
debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
#ifdef CONFIG_LCD
#ifdef CONFIG_FB_ADDR
gd->fb_base = CONFIG_FB_ADDR;
#else
/* reserve memory for LCD display (always full pages) */
addr = lcd_setmem(addr);
gd->fb_base = addr;
#endif /* CONFIG_FB_ADDR */
#endif /* CONFIG_LCD */
/*
* reserve memory for U-Boot code, data & bss
* round down to next 4 kB limit
*/
addr -= gd->mon_len;
addr &= ~(4096 - 1);
debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
/*
* reserve memory for malloc() arena
*/
addr_sp = addr - TOTAL_MALLOC_LEN;
debug("Reserving %dk for malloc() at: %08lx\n",
TOTAL_MALLOC_LEN >> 10, addr_sp);
/*
* (permanently) allocate a Board Info struct
* and a permanent copy of the "global" data
*/
addr_sp -= GENERATED_BD_INFO_SIZE;
bd = (bd_t *) addr_sp;
gd->bd = bd;
memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
debug("Reserving %zu Bytes for Board Info at: %08lx\n",
GENERATED_BD_INFO_SIZE, addr_sp);
addr_sp -= GENERATED_GBL_DATA_SIZE;
id = (gd_t *) addr_sp;
debug("Reserving %zu Bytes for Global Data at: %08lx\n",
GENERATED_GBL_DATA_SIZE, addr_sp);
/* setup stackpointer for exeptions */
gd->irq_sp = addr_sp;
#ifdef CONFIG_USE_IRQ
addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
#endif
/* leave 3 words for abort-stack */
addr_sp -= 12;
/* 8-byte alignment for ABI compliance */
addr_sp &= ~0x07;
debug("New Stack Pointer is: %08lx\n", addr_sp);
gd->bd->bi_baudrate = gd->baudrate;
/* Ram isn't board specific, so move it to board code ... */
dram_init_banksize();
display_dram_config(); /* and display it */
gd->relocaddr = addr;
gd->start_addr_sp = addr_sp;
gd->reloc_off = addr - _TEXT_BASE;
debug("relocation Offset is: %08lx\n", gd->reloc_off);
memcpy(id, (void *)gd, GENERATED_GBL_DATA_SIZE);
relocate_code(addr_sp, id, addr);
/* NOTREACHED - relocate_code() does not return */
}