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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-01-18 02:07:33 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-01-23 09:43:28 +0100 |
| commit | 463229490e5624f55a968d9321334f441a981ef2 (patch) | |
| tree | b42df7c0d72a08efcaca576b2ab7c542c6f300db /include/asm-generic | |
| parent | 4bcf52aa6635cac1b88c513f90f732595979cf94 (diff) | |
| download | barebox-463229490e5624f55a968d9321334f441a981ef2.tar.gz barebox-463229490e5624f55a968d9321334f441a981ef2.tar.xz | |
introduce barebox_bare_init_size to known the bare_init size and check it
this allow to check we do not exceed the size of the SRAM as example
introduce BAREBOX_MAX_BARE_INIT_SIZE the maximum size of bare_init
this will allow your bare_init will fit in SRAM as example
ARCH can overwrite it via ARCH_BAREBOX_MAX_BARE_INIT_SIZE
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/barebox.lds.h | 15 | ||||
| -rw-r--r-- | include/asm-generic/sections.h | 3 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/asm-generic/barebox.lds.h b/include/asm-generic/barebox.lds.h index 5467d3a8a0..3c0be96787 100644 --- a/include/asm-generic/barebox.lds.h +++ b/include/asm-generic/barebox.lds.h @@ -26,3 +26,18 @@ #define BAREBOX_SYMS KEEP(*(__usymtab)) #define BAREBOX_MAGICVARS KEEP(*(SORT_BY_NAME(.barebox_magicvar*))) + +#if defined(CONFIG_ARCH_BAREBOX_MAX_BARE_INIT_SIZE) && \ +CONFIG_ARCH_BAREBOX_MAX_BARE_INIT_SIZE < CONFIG_BAREBOX_MAX_BARE_INIT_SIZE +#define MAX_BARE_INIT_SIZE CONFIG_ARCH_BAREBOX_MAX_BARE_INIT_SIZE +#else +#define MAX_BARE_INIT_SIZE CONFIG_BAREBOX_MAX_BARE_INIT_SIZE +#endif + +#include <linux/stringify.h> +/* use 2 ASSERT because ld can not accept '"size" "10"' format */ +#define BAREBOX_BARE_INIT_SIZE \ + _barebox_bare_init_size = __bare_init_end - _text; \ + ASSERT(_barebox_bare_init_size < MAX_BARE_INIT_SIZE, "Barebox bare_init size > ") \ + ASSERT(_barebox_bare_init_size < MAX_BARE_INIT_SIZE, __stringify(MAX_BARE_INIT_SIZE)) \ + diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h index 1f48fb8c6b..5484b6f004 100644 --- a/include/asm-generic/sections.h +++ b/include/asm-generic/sections.h @@ -3,9 +3,12 @@ extern char _text[], _stext[], _etext[]; extern char __bss_start[], __bss_stop[]; +extern char __bare_init_start[], __bare_init_end[]; extern char _end[]; extern void *_barebox_image_size; +extern void *_barebox_bare_init_size; #define barebox_image_size (unsigned int)&_barebox_image_size +#define barebox_bare_init_size (unsigned int)&_barebox_bare_init_size #endif /* _ASM_GENERIC_SECTIONS_H_ */ |