*
* Copyright (c) 2004 Texas Instruments <r-woodruff2@ti.com>
*
- * Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
- * Copyright (c) 2002 Alex Z
üpke <azu@sysgo.de>
+ * Copyright (c) 2001 Marius Gröger <mag@sysgo.de>
+ * Copyright (c) 2002 Alex Z
üpke <azu@sysgo.de>
* Copyright (c) 2002 Gary Jennejohn <garyj@denx.de>
* Copyright (c) 2003 Richard Woodruff <r-woodruff2@ti.com>
* Copyright (c) 2003 Kshitij <kshitij@ti.com>
* MA 02111-1307 USA
*/
+#include <asm-offsets.h>
#include <config.h>
#include <version.h>
.globl _start
_start: b reset
-#ifdef CONFIG_PRELOADER
+#ifdef CONFIG_SPL_BUILD
ldr pc, _hang
ldr pc, _hang
ldr pc, _hang
_irq: .word irq
_fiq: .word fiq
_pad: .word 0x12345678 /* now 16*4=64 */
-#endif /* CONFIG_PRELOADER */
+#endif /* CONFIG_SPL_BUILD */
.global _end_vect
_end_vect:
.globl _TEXT_BASE
_TEXT_BASE:
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_TEXT_BASE)
+ .word CONFIG_SPL_TEXT_BASE
+#else
.word CONFIG_SYS_TEXT_BASE
+#endif
/*
* These are defined in the board-specific linker script.
_bss_start_ofs:
.word __bss_start - _start
+.globl _image_copy_end_ofs
+_image_copy_end_ofs:
+ .word __image_copy_end - _start
+
.globl _bss_end_ofs
_bss_end_ofs:
- .word _end - _start
-
-.globl _datarel_start_ofs
-_datarel_start_ofs:
- .word __datarel_start - _start
+ .word __bss_end - _start
-.globl _datarelrolocal_start_ofs
-_datarelrolocal_start_ofs:
- .word __datarelrolocal_start - _start
-
-.globl _datarellocal_start_ofs
-_datarellocal_start_ofs:
- .word __datarellocal_start - _start
-
-.globl _datarelro_start_ofs
-_datarelro_start_ofs:
- .word __datarelro_start - _start
+.globl _end_ofs
+_end_ofs:
+ .word _end - _start
#ifdef CONFIG_USE_IRQ
/* IRQ stack memory (calculated at run-time) */
.word 0x0badc0de
#endif
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
/* IRQ stack memory (calculated at run-time) + 8 bytes */
.globl IRQ_STACK_START_IN
IRQ_STACK_START_IN:
.word 0x0badc0de
-#endif
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
/*
* the actual reset code
*/
bl cpu_init_crit
#endif
-/* Set stackpointer in internal RAM to call board_init_f */
-call_board_init_f:
- ldr sp, =(CONFIG_SYS_INIT_SP_ADDR)
- ldr r0,=0x00000000
-
-#ifdef CONFIG_NAND_SPL
- bl nand_boot
-#else
-#ifdef CONFIG_ONENAND_IPL
- bl start_oneboot
-#else
- bl board_init_f
-#endif /* CONFIG_ONENAND_IPL */
-#endif /* CONFIG_NAND_SPL */
+ bl _main
/*------------------------------------------------------------------------------*/
/*
- * void relocate_code (addr_sp, gd, addr_moni)
- *
- * This "function" does not return, instead it continues in RAM
- * after relocating the monitor code.
+ * void relocate_code(addr_moni)
*
+ * This function relocates the monitor code.
*/
.globl relocate_code
relocate_code:
- mov r4, r0 /* save addr_sp */
- mov r5, r1 /* save addr of gd */
- mov r6, r2 /* save addr of destination */
- mov r7, r2 /* save addr of destination */
-
- /* Set up the stack */
-stack_setup:
- mov sp, r4
+ mov r6, r0 /* save addr of destination */
adr r0, _start
- ldr r2, _TEXT_BASE
- ldr r3, _bss_start_ofs
+ subs r9, r6, r0 /* r9 <- relocation offset */
+ beq relocate_done /* skip relocation */
+ mov r1, r6 /* r1 <- scratch for copy_loop */
+ ldr r3, _image_copy_end_ofs
add r2, r0, r3 /* r2 <- source end address */
- cmp r0, r6
- beq clear_bss
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
copy_loop:
- ldmia r0!, {r9-r10} /* copy from source address [r0] */
- stmia r6!, {r9-r10} /* copy to target address [r1] */
+ ldmia r0!, {r10-r11} /* copy from source address [r0] */
+ stmia r1!, {r10-r11} /* copy to target address [r1] */
cmp r0, r2 /* until source end address [r2] */
blo copy_loop
-#ifndef CONFIG_PRELOADER
+#ifndef CONFIG_SPL_BUILD
/*
* fix .rel.dyn relocations
*/
ldr r0, _TEXT_BASE /* r0 <- Text base */
- sub r9, r7, r0 /* r9 <- relocation offset */
ldr r10, _dynsym_start_ofs /* r10 <- sym table ofs */
add r10, r10, r0 /* r10 <- sym table in FLASH */
ldr r2, _rel_dyn_start_ofs /* r2 <- rel dyn start ofs */
ldr r3, _rel_dyn_end_ofs /* r3 <- rel dyn end ofs */
add r3, r3, r0 /* r3 <- rel dyn end in FLASH */
fixloop:
- ldr r0, [r2] /* r0 <- location to fix up, IN FLASH! */
- add r0, r9 /* r0 <- location to fix up in RAM */
+ ldr r0, [r2] /* r0 <- location to fix up, IN FLASH! */
+ add r0, r0, r9 /* r0 <- location to fix up in RAM */
ldr r1, [r2, #4]
- and r8, r1, #0xff
- cmp r8, #23 /* relative fixup? */
+ and r7, r1, #0xff
+ cmp r7, #23 /* relative fixup? */
beq fixrel
- cmp r8, #2 /* absolute fixup? */
+ cmp r7, #2 /* absolute fixup? */
beq fixabs
/* ignore unknown type of fixup */
b fixnext
mov r1, r1, LSR #4 /* r1 <- symbol index in .dynsym */
add r1, r10, r1 /* r1 <- address of symbol in table */
ldr r1, [r1, #4] /* r1 <- symbol value */
- add r1, r9 /* r1 <- relocated sym addr */
+ add r1, r1, r9 /* r1 <- relocated sym addr */
b fixnext
fixrel:
/* relative fix: increase location by offset */
add r1, r1, r9
fixnext:
str r1, [r0]
- add r2, r2, #8 /* each rel.dyn entry is 8 bytes */
+ add r2, r2, #8 /* each rel.dyn entry is 8 bytes */
cmp r2, r3
- ble fixloop
+ blo fixloop
#endif
-#endif /* #ifndef CONFIG_SKIP_RELOCATE_UBOOT */
-
-clear_bss:
-#ifndef CONFIG_PRELOADER
- ldr r0, _bss_start_ofs
- ldr r1, _bss_end_ofs
- ldr r3, _TEXT_BASE /* Text base */
- mov r4, r7 /* reloc addr */
- add r0, r0, r4
- add r1, r1, r4
- mov r2, #0x00000000 /* clear */
-
-clbss_l:str r2, [r0] /* clear loop... */
- add r0, r0, #4
- cmp r0, r1
- bne clbss_l
-#endif /* #ifndef CONFIG_PRELOADER */
-/*
- * We are done. Do not return, instead branch to second part of board
- * initialization, now running from RAM.
- */
-#ifdef CONFIG_NAND_SPL
- ldr r0, _nand_boot_ofs
- adr r1, _start
- add pc, r0, r1
-_nand_boot_ofs
- : .word nand_boot - _start
-#else
-jump_2_ram:
- ldr r0, _board_init_r_ofs
- adr r1, _start
- add r0, r0, r1
- add lr, r0, r9
- /* setup parameters for board_init_r */
- mov r0, r5 /* gd_t */
- mov r1, r7 /* dest_addr */
- /* jump to it ... */
- mov pc, lr
-
-_board_init_r_ofs:
- .word board_init_r - _start
-#endif
+relocate_done:
+
+ bx lr
+
+#ifndef CONFIG_SPL_BUILD
_rel_dyn_start_ofs:
.word __rel_dyn_start - _start
_dynsym_start_ofs:
.word __dynsym_start - _start
-#else /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
-/*
- * the actual reset code
- */
-
-reset:
- /*
- * set the cpu to SVC32 mode
- */
- mrs r0,cpsr
- bic r0,r0,#0x1f
- orr r0,r0,#0xd3
- msr cpsr,r0
-
-#ifdef CONFIG_OMAP2420H4
- /* Copy vectors to mask ROM indirect addr */
- adr r0, _start /* r0 <- current position of code */
- add r0, r0, #4 /* skip reset vector */
- mov r2, #64 /* r2 <- size to copy */
- add r2, r0, r2 /* r2 <- source end address */
- mov r1, #SRAM_OFFSET0 /* build vect addr */
- mov r3, #SRAM_OFFSET1
- add r1, r1, r3
- mov r3, #SRAM_OFFSET2
- add r1, r1, r3
-next:
- ldmia r0!, {r3-r10} /* copy from source address [r0] */
- stmia r1!, {r3-r10} /* copy to target address [r1] */
- cmp r0, r2 /* until source end address [r2] */
- bne next /* loop until equal */
- bl cpy_clk_code /* put dpll adjust code behind vectors */
-#endif
- /* the mask ROM code should have PLL and others stable */
-#ifndef CONFIG_SKIP_LOWLEVEL_INIT
- bl cpu_init_crit
-#endif
-
-#ifndef CONFIG_SKIP_RELOCATE_UBOOT
-relocate: /* relocate U-Boot to RAM */
- adr r0, _start /* r0 <- current position of code */
- ldr r1, _TEXT_BASE /* test if we run from flash or RAM */
- cmp r0, r1 /* don't reloc during debug */
-#ifndef CONFIG_PRELOADER
- beq stack_setup
-#endif /* CONFIG_PRELOADER */
-
- ldr r2, _armboot_start
- ldr r3, _bss_start
- sub r2, r3, r2 /* r2 <- size of armboot */
- add r2, r0, r2 /* r2 <- source end address */
-
-copy_loop:
- ldmia r0!, {r3-r10} /* copy from source address [r0] */
- stmia r1!, {r3-r10} /* copy to target address [r1] */
- cmp r0, r2 /* until source end address [r2] */
- blo copy_loop
-#endif /* CONFIG_SKIP_RELOCATE_UBOOT */
-
- /* Set up the stack */
-stack_setup:
- ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
-#ifdef CONFIG_PRELOADER
- sub sp, r0, #128 /* leave 32 words for abort-stack */
-#else
- sub r0, r0, #CONFIG_SYS_MALLOC_LEN /* malloc area */
- sub r0, r0, #CONFIG_SYS_GBL_DATA_SIZE /* bdinfo */
-#ifdef CONFIG_USE_IRQ
- sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
-#endif
- sub sp, r0, #12 /* leave 3 words for abort-stack */
-#endif /* CONFIG_PRELOADER */
- bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
-
-clear_bss:
- adr r2, _start
- ldr r0, _bss_start_ofs /* find start of bss segment */
- add r0, r0, r2
- ldr r1, _bss_end_ofs /* stop here */
- add r1, r1, r2
- mov r2, #0x00000000 /* clear */
-
-#ifndef CONFIG_PRELOADER
-clbss_l:str r2, [r0] /* clear loop... */
- add r0, r0, #4
- cmp r0, r1
- bne clbss_l
#endif
- ldr r0, _start_armboot_ofs
- adr r1, _start
- add r0, r0, r1
- ldr pc, r0
+ .globl c_runtime_cpu_setup
+c_runtime_cpu_setup:
-_start_armboot_ofs:
-#ifdef CONFIG_NAND_SPL
- .word nand_boot - _start
-#else
-#ifdef CONFIG_ONENAND_IPL
- .word start_oneboot - _start
-#else
- .word start_armboot - _start
-#endif /* CONFIG_ONENAND_IPL */
-#endif /* CONFIG_NAND_SPL */
-
-#endif /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */
+ bx lr
/*
*************************************************************************
mov pc, lr /* back to my caller */
#endif /* CONFIG_SKIP_LOWLEVEL_INIT */
-#ifndef CONFIG_PRELOADER
+#ifndef CONFIG_SPL_BUILD
/*
*************************************************************************
*
sub sp, sp, #S_FRAME_SIZE @ carve out a frame on current user stack
stmia sp, {r0 - r12} @ Save user registers (now in svc mode) r0-r12
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r2, IRQ_STACK_START_IN @ set base 2 words into abort stack
-#else
- adr r2, _start
- sub r2, r2, #(CONFIG_SYS_MALLOC_LEN)
- sub r2, r2, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ set base 2 words into abort stack
-#endif
ldmia r2, {r2 - r3} @ get values for "aborted" pc and cpsr (into parm regs)
add r0, sp, #S_FRAME_SIZE @ grab pointer to old stack
.endm
.macro get_bad_stack
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r13, IRQ_STACK_START_IN @ setup our mode stack (enter in banked mode)
-#else
- adr r13, _start @ setup our mode stack (enter in banked mode)
- sub r13, r13, #(CONFIG_STACKSIZE+CONFIG_SYS_MALLOC_LEN) @ move past malloc pool
- sub r13, r13, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ move to reserved a couple spots for abort stack
-#endif
str lr, [r13] @ save caller lr in position 0 of saved stack
mrs lr, spsr @ get the spsr
.macro get_bad_stack_swi
sub r13, r13, #4 @ space on current stack for scratch reg.
str r0, [r13] @ save R0's value.
-#if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC)
ldr r0, IRQ_STACK_START_IN @ get data regions start
-#else
- ldr r0, _armboot_start @ get data regions start
- sub r0, r0, #(CONFIG_SYS_MALLOC_LEN) @ move past malloc pool
- sub r0, r0, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ move past gbl and a couple spots for abort stack
-#endif
str lr, [r0] @ save caller lr in position 0 of saved stack
- mrs r0, spsr @ get the spsr
+ mrs lr, spsr @ get the spsr
str lr, [r0, #4] @ save spsr in position 1 of saved stack
+ ldr lr, [r0] @ restore lr
ldr r0, [r13] @ restore r0
add r13, r13, #4 @ pop stack entry
.endm
.macro get_fiq_stack @ setup FIQ stack
ldr sp, FIQ_STACK_START
.endm
-#endif /* CONFIG_PRELOADER */
+#endif /* CONFIG_SPL_BUILD */
/*
* exception handlers
*/
-#ifdef CONFIG_PRELOADER
+#ifdef CONFIG_SPL_BUILD
.align 5
do_hang:
ldr sp, _TEXT_BASE /* use 32 words about stack */
bl hang /* hang and never return */
-#else /* !CONFIG_PRELOADER */
+#else /* !CONFIG_SPL_BUILD */
.align 5
undefined_instruction:
get_bad_stack
.align 5
.global arm1136_cache_flush
arm1136_cache_flush:
-#if !defined(CONFIG_SYS_NO_ICACHE)
+#if !defined(CONFIG_SYS_ICACHE_OFF)
mcr p15, 0, r1, c7, c5, 0 @ invalidate I cache
#endif
-#if !defined(CONFIG_SYS_NO_DCACHE)
+#if !defined(CONFIG_SYS_DCACHE_OFF)
mcr p15, 0, r1, c7, c14, 0 @ invalidate D cache
#endif
mov pc, lr @ back to caller
-#endif /* CONFIG_PRELOADER */
+#endif /* CONFIG_SPL_BUILD */
projects / karo-tx-uboot.git / blobdiff