diff --git a/arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c b/arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c index 73e54f2..695e75f 100644 --- a/arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c +++ b/arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c @@ -46,13 +46,14 @@ #include #include #include +#include extern unsigned long _stext; extern void exception_vectors(void); void __naked __flash_header_start go(void) { - __asm__ __volatile__("b exception_vectors\n"); + barebox_arm_head(); } struct imx_dcd_entry __dcd_entry_section dcd_entry[] = { diff --git a/arch/arm/boards/eukrea_cpuimx35/flash_header.c b/arch/arm/boards/eukrea_cpuimx35/flash_header.c index 93c8348..f8ed5d4 100644 --- a/arch/arm/boards/eukrea_cpuimx35/flash_header.c +++ b/arch/arm/boards/eukrea_cpuimx35/flash_header.c @@ -1,12 +1,13 @@ #include #include #include +#include extern void exception_vectors(void); void __naked __flash_header_start go(void) { - __asm__ __volatile__("b exception_vectors\n"); + barebox_arm_head(); } struct imx_dcd_entry __dcd_entry_section dcd_entry[] = { diff --git a/arch/arm/boards/eukrea_cpuimx51/flash_header.c b/arch/arm/boards/eukrea_cpuimx51/flash_header.c index f953b09..ac6bbdc 100644 --- a/arch/arm/boards/eukrea_cpuimx51/flash_header.c +++ b/arch/arm/boards/eukrea_cpuimx51/flash_header.c @@ -1,11 +1,12 @@ #include #include +#include extern unsigned long _stext; void __naked __flash_header_start go(void) { - __asm__ __volatile__("b exception_vectors\n"); + barebox_arm_head(); } struct imx_dcd_entry __dcd_entry_section dcd_entry[] = { diff --git a/arch/arm/boards/freescale-mx25-3-stack/3stack.c b/arch/arm/boards/freescale-mx25-3-stack/3stack.c index 5aa54e4..d7e24cf 100644 --- a/arch/arm/boards/freescale-mx25-3-stack/3stack.c +++ b/arch/arm/boards/freescale-mx25-3-stack/3stack.c @@ -42,13 +42,14 @@ #include #include #include +#include extern unsigned long _stext; extern void exception_vectors(void); void __naked __flash_header_start go(void) { - __asm__ __volatile__("b exception_vectors\n"); + barebox_arm_head(); } struct imx_dcd_entry __dcd_entry_section dcd_entry[] = { diff --git a/arch/arm/boards/freescale-mx35-3-stack/flash_header.c b/arch/arm/boards/freescale-mx35-3-stack/flash_header.c index 92f2142..85b52a2 100644 --- a/arch/arm/boards/freescale-mx35-3-stack/flash_header.c +++ b/arch/arm/boards/freescale-mx35-3-stack/flash_header.c @@ -1,12 +1,13 @@ #include #include #include +#include extern void exception_vectors(void); void __naked __flash_header_start go(void) { - __asm__ __volatile__("b exception_vectors\n"); + barebox_arm_head(); } struct imx_dcd_entry __dcd_entry_section dcd_entry[] = { diff --git a/arch/arm/boards/freescale-mx51-pdk/flash_header.c b/arch/arm/boards/freescale-mx51-pdk/flash_header.c index 5f94506..297dca1 100644 --- a/arch/arm/boards/freescale-mx51-pdk/flash_header.c +++ b/arch/arm/boards/freescale-mx51-pdk/flash_header.c @@ -1,11 +1,12 @@ #include #include +#include extern unsigned long _stext; void __naked __flash_header_start go(void) { - __asm__ __volatile__("b exception_vectors\n"); + barebox_arm_head(); } struct imx_dcd_entry __dcd_entry_section dcd_entry[] = { diff --git a/arch/arm/boards/freescale-mx53-loco/flash_header.c b/arch/arm/boards/freescale-mx53-loco/flash_header.c index 490e223..b459640 100644 --- a/arch/arm/boards/freescale-mx53-loco/flash_header.c +++ b/arch/arm/boards/freescale-mx53-loco/flash_header.c @@ -16,10 +16,11 @@ #include #include #include +#include void __naked __flash_header_start go(void) { - __asm__ __volatile__("b exception_vectors\n"); + barebox_arm_head(); } struct imx_dcd_v2_entry __dcd_entry_section dcd_entry[] = { diff --git a/arch/arm/boards/freescale-mx53-smd/flash_header.c b/arch/arm/boards/freescale-mx53-smd/flash_header.c index 490e223..b459640 100644 --- a/arch/arm/boards/freescale-mx53-smd/flash_header.c +++ b/arch/arm/boards/freescale-mx53-smd/flash_header.c @@ -16,10 +16,11 @@ #include #include #include +#include void __naked __flash_header_start go(void) { - __asm__ __volatile__("b exception_vectors\n"); + barebox_arm_head(); } struct imx_dcd_v2_entry __dcd_entry_section dcd_entry[] = { diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c index 6d9b1e0..c19f931 100644 --- a/arch/arm/cpu/mmu.c +++ b/arch/arm/cpu/mmu.c @@ -4,6 +4,7 @@ #include #include #include +#include #include #include @@ -182,7 +183,6 @@ { u32 *exc, *zero = NULL; void *vectors; - extern unsigned long exception_vectors; u32 cr; cr = get_cr(); @@ -210,7 +210,7 @@ vectors = xmemalign(PAGE_SIZE, PAGE_SIZE); memset(vectors, 0, PAGE_SIZE); - memcpy(vectors, &exception_vectors, ARM_VECTORS_SIZE); + memcpy(vectors, __exceptions_start, __exceptions_stop - __exceptions_start); if (cr & CR_V) exc[256 - 16] = (u32)vectors | PTE_TYPE_SMALL | PTE_FLAGS_CACHED; diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c index 61d7e3e..1a1538e 100644 --- a/arch/arm/cpu/start.c +++ b/arch/arm/cpu/start.c @@ -23,11 +23,17 @@ #include #include #include +#include #include #include #include -void __naked __section(.text_entry) exception_vectors(void) +void __naked __section(.text_entry) start(void) +{ + barebox_arm_head(); +} + +void __naked __section(.text_exceptions) exception_vectors(void) { __asm__ __volatile__ ( "b reset\n" /* reset */ @@ -48,12 +54,6 @@ "1: bne 1b\n" /* irq (interrupt) */ "1: bne 1b\n" /* fiq (fast interrupt) */ #endif - ".word 0x65726162\n" /* 'bare' */ - ".word 0x00786f62\n" /* 'box' */ - ".word _text\n" /* text base. If copied there, - * barebox can skip relocation - */ - ".word _barebox_image_size\n" /* image size to copy */ ); } diff --git a/arch/arm/include/asm/barebox-arm-head.h b/arch/arm/include/asm/barebox-arm-head.h new file mode 100644 index 0000000..fdbee8c --- /dev/null +++ b/arch/arm/include/asm/barebox-arm-head.h @@ -0,0 +1,24 @@ +#ifndef __ASM_ARM_HEAD_H +#define __ASM_ARM_HEAD_H + +static inline void barebox_arm_head(void) +{ + __asm__ __volatile__ ( + "b reset\n" + "1: b 1b\n" + "1: b 1b\n" + "1: b 1b\n" + "1: b 1b\n" + "1: b 1b\n" + "1: b 1b\n" + "1: b 1b\n" + ".word 0x65726162\n" /* 'bare' */ + ".word 0x00786f62\n" /* 'box' */ + ".word _text\n" /* text base. If copied there, + * barebox can skip relocation + */ + ".word _barebox_image_size\n" /* image size to copy */ + ); +} + +#endif /* __ASM_ARM_HEAD_H */ diff --git a/arch/arm/include/asm/barebox-arm.h b/arch/arm/include/asm/barebox-arm.h index 7bb1af1..3339782 100644 --- a/arch/arm/include/asm/barebox-arm.h +++ b/arch/arm/include/asm/barebox-arm.h @@ -36,6 +36,8 @@ int board_init(void); int dram_init (void); +extern char __exceptions_start[], __exceptions_stop[]; + void board_init_lowlevel(void); void board_init_lowlevel_return(void); void arch_init_lowlevel(void); diff --git a/arch/arm/lib/barebox.lds.S b/arch/arm/lib/barebox.lds.S index e9f6210..531e3d0 100644 --- a/arch/arm/lib/barebox.lds.S +++ b/arch/arm/lib/barebox.lds.S @@ -26,7 +26,7 @@ OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") OUTPUT_ARCH(arm) -ENTRY(exception_vectors) +ENTRY(start) SECTIONS { . = TEXT_BASE; @@ -47,6 +47,9 @@ __bare_init_start = .; *(.text_bare_init*) __bare_init_end = .; + __exceptions_start = .; + KEEP(*(.text_exceptions*)) + __exceptions_stop = .; *(.text*) } BAREBOX_BARE_INIT_SIZE