Added arch_lmb_reserve to allow arch specific memory regions protection
PATCH 1/1 Added arch_lmb_reserve to allow arch specific memory regions protection
Each architecture has different ways of determine what regions of memory might not be valid to get overwritten when we boot. This provides a hook to allow them to reserve any regions they care about. Currently only ppc, m68k and sparc need/use this.
--- lib_m68k/bootm.c | 29 ++++++++++++++++------------- lib_ppc/bootm.c | 50 ++++++++++++++++++++++++++++---------------------- lib_sparc/bootm.c | 16 +++++++++------- 3 files changed, 53 insertions(+), 42 deletions(-)
lib_m68k/bootm.c +16 -13
@@ -43,22 +43,10 @@ DECLARE_GLOBAL_DATA_PTR;static ulong get_sp (void );static void set_clocks_in_mhz (bd_t *kbd); -int do_bootm_linux (int flag,int argc,char *argv[],bootm_headers_t *images) +void arch_lmb_reserve (struct lmb *lmb) {ulong sp; -ulong rd_len; -ulong initrd_start, initrd_end; -int ret; - -ulong cmd_start, cmd_end; -ulong bootmap_base; -bd_t *kbd; -void (*kernel) (bd_t *,ulong ,ulong ,ulong ,ulong ); -struct lmb *lmb = &images->lmb; - - bootmap_base =getenv_bootm_low (); -/* * Booting a (Linux) kernel image *
@@ -74,6 +62,21 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)/* adjust sp by 1K to be safe */ sp -=1024 ;lmb_reserve (lmb, sp, (CFG_SDRAM_BASE + gd->ram_size - sp)); +} + +int do_bootm_linux (int flag,int argc,char *argv[],bootm_headers_t *images) +{ +ulong rd_len; +ulong initrd_start, initrd_end; +int ret; + +ulong cmd_start, cmd_end; +ulong bootmap_base; +bd_t *kbd; +void (*kernel) (bd_t *,ulong ,ulong ,ulong ,ulong ); +struct lmb *lmb = &images->lmb; + + bootmap_base =getenv_bootm_low ();/* allocate space and init command line */ ret =boot_get_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);
lib_ppc/bootm.c +28 -22
64 lines not on this page · raw message
lib_sparc/bootm.c +9 -7
@@ -81,6 +81,15 @@ struct __attribute__ ((packed)) {/* temporary initrd image holder */ image_header_t ihdr; +void arch_lmb_reserve (struct lmb *lmb) +{ +/* Reserve the space used by PROM and stack. This is done +* to avoid that the RAM image is copied over stack or +* PROM. +*/ +lmb_reserve (lmb,CFG_RELOC_MONITOR_BASE ,CFG_RAM_END ); +} +/* boot the linux kernel */ int do_bootm_linux (int flag,int argc,char *argv[],bootm_headers_t * images) {
@@ -124,13 +133,6 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t * images) rd_len = images->rd_end - images->rd_start;if (rd_len) { - -/* Reserve the space used by PROM and stack. This is done -* to avoid that the RAM image is copied over stack or -* PROM. -*/ -lmb_reserve (lmb,CFG_RELOC_MONITOR_BASE ,CFG_RAM_END ); - ret =boot_ramdisk_high (lmb, images->rd_start, rd_len, &initrd_start, &initrd_end);if (ret) {
Signature · 1 line
1.5.5.1
PATCH 1/1 Added arch_lmb_reserve to allow arch specific memory regions protection
Quoted 6 lines · Kumar Gala
Each architecture has different ways of determine what regions of memory
might not be valid to get overwritten when we boot. This provides a hook to allow them to reserve any regions they care about. Currently only ppc, m68k and sparc need/use this.
Quoted 7 lines
Signed-off-by Kumar Gala <[email protected]>---
lib_m68k/bootm.c | 29 ++++++++++++++++------------- lib_ppc/bootm.c | 50 +++++++++++++++++++++++++++ +---------------------- lib_sparc/bootm.c | 16 +++++++++------- 3 files changed, 53 insertions(+), 42 deletions(-)
Do not apply this version.. forgot the changes to cmd_bootm.c
- k