* MA 02111-1307 USA
*/
-
+#include <asm-offsets.h>
#include <config.h>
#include <version.h>
#include <asm/hardware.h>
*************************************************************************
*/
+.globl _TEXT_BASE
_TEXT_BASE:
- .word TEXT_BASE
-
-.globl _armboot_start
-_armboot_start:
- .word _start
+ .word CONFIG_SYS_TEXT_BASE
/*
* These are defined in the board-specific linker script.
.word 0x0badc0de
#endif
+/* IRQ stack memory (calculated at run-time) + 8 bytes */
+.globl IRQ_STACK_START_IN
+IRQ_STACK_START_IN:
+ .word 0x0badc0de
+
+.globl _datarel_start
+_datarel_start:
+ .word __datarel_start
+
+.globl _datarelrolocal_start
+_datarelrolocal_start:
+ .word __datarelrolocal_start
+
+.globl _datarellocal_start
+_datarellocal_start:
+ .word __datarellocal_start
+
+.globl _datarelro_start
+_datarelro_start:
+ .word __datarelro_start
+
+.globl _got_start
+_got_start:
+ .word __got_start
+
+.globl _got_end
+_got_end:
+ .word __got_end
/*
* the actual reset code
*/
mrs r0,cpsr
bic r0,r0,#0x1f
- orr r0,r0,#0x13
+ orr r0,r0,#0xd3
msr cpsr,r0
/*
bl lowlevel_init
#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 */
- beq stack_setup
-
-#if TEXT_BASE
-#ifndef CONFIG_LPC2292 /* already done in lowlevel_init */
- ldr r2, =0x0 /* Relocate the exception vectors */
- cmp r1, r2 /* and associated data to address */
- ldmneia r0!, {r3-r10} /* 0x0. Do nothing if TEXT_BASE is */
- stmneia r2!, {r3-r10} /* 0x0. Copy the first 15 words. */
- ldmneia r0, {r3-r9}
- stmneia r2, {r3-r9}
- adrne r0, _start /* restore r0 */
-#endif /* !CONFIG_LPC2292 */
-#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
+ bl board_init_f
- ldr r2, _armboot_start
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating 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
+
+ adr r0, _start
+ ldr r2, _TEXT_BASE
ldr r3, _bss_start
sub r2, r3, r2 /* r2 <- size of armboot */
add r2, r0, r2 /* r2 <- source end address */
+ cmp r0, r6
+ beq clear_bss
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 addreee [r2] */
- ble copy_loop
-
-#endif /* CONFIG_SKIP_RELOCATE_UBOOT */
-
- /* Set up the stack */
-stack_setup:
- ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
- 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)
+ ldmia r0!, {r9-r10} /* copy from source address [r0] */
+ stmia r6!, {r9-r10} /* copy to target address [r1] */
+ cmp r0, r2 /* until source end address [r2] */
+ blo copy_loop
+
+#ifndef CONFIG_PRELOADER
+ /* fix got entries */
+ ldr r1, _TEXT_BASE /* Text base */
+ mov r0, r7 /* reloc addr */
+ ldr r2, _got_start /* addr in Flash */
+ ldr r3, _got_end /* addr in Flash */
+ sub r3, r3, r1
+ add r3, r3, r0
+ sub r2, r2, r1
+ add r2, r2, r0
+
+fixloop:
+ ldr r4, [r2]
+ sub r4, r4, r1
+ add r4, r4, r0
+ str r4, [r2]
+ add r2, r2, #4
+ cmp r2, r3
+ blo fixloop
#endif
- sub sp, r0, #12 /* leave 3 words for abort-stack */
- bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
clear_bss:
- ldr r0, _bss_start /* find start of bss segment */
- ldr r1, _bss_end /* stop here */
+#ifndef CONFIG_PRELOADER
+ ldr r0, _bss_start
+ ldr r1, _bss_end
+ ldr r3, _TEXT_BASE /* Text base */
+ mov r4, r7 /* reloc addr */
+ sub r0, r0, r3
+ add r0, r0, r4
+ sub r1, r1, r3
+ add r1, r1, r4
mov r2, #0x00000000 /* clear */
clbss_l:str r2, [r0] /* clear loop... */
add r0, r0, #4
cmp r0, r1
- ble clbss_l
+ bne clbss_l
+
+ bl coloured_LED_init
+ bl red_LED_on
+#endif
- ldr pc, _start_armboot
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+ ldr r0, _TEXT_BASE
+ ldr r2, _board_init_r
+ sub r2, r2, r0
+ add r2, r2, r7 /* position from board_init_r in RAM */
+ /* setup parameters for board_init_r */
+ mov r0, r5 /* gd_t */
+ mov r1, r7 /* dest_addr */
+ /* jump to it ... */
+ mov lr, r2
+ mov pc, lr
-_start_armboot: .word start_armboot
+_board_init_r: .word board_init_r
/*
*************************************************************************
stmia sp, {r0 - r12} @ Calling r0-r12
add r8, sp, #S_PC
- ldr r2, _armboot_start
- sub r2, r2, #(CONFIG_STACKSIZE+CONFIG_SYS_MALLOC_LEN)
- sub r2, r2, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ set base 2 words into abort stack
+ ldr r2, IRQ_STACK_START_IN
ldmia r2, {r2 - r4} @ get pc, cpsr, old_r0
add r0, sp, #S_FRAME_SIZE @ restore sp_SVC
.endm
.macro get_bad_stack
- ldr r13, _armboot_start @ setup our mode stack
- sub r13, r13, #(CONFIG_STACKSIZE+CONFIG_SYS_MALLOC_LEN)
- sub r13, r13, #(CONFIG_SYS_GBL_DATA_SIZE+8) @ reserved a couple spots in abort stack
+ ldr r13, IRQ_STACK_START_IN @ setup our mode stack
str lr, [r13] @ save caller lr / spsr
mrs lr, spsr
ldr r0, [r1, #+NETARM_MEM_CS0_BASE_ADDR]
ldr r1, =0xFFFFF000
and r0, r1, r0
- ldr r1, =(relocate-TEXT_BASE)
+ ldr r1, =(relocate-CONFIG_SYS_TEXT_BASE)
add r0, r1, r0
ldr r4, =NETARM_GEN_MODULE_BASE
ldr r1, =NETARM_GEN_SW_SVC_RESETA
projects / u-boot / blobdiff