diff options
Diffstat (limited to 'arch/x86/lib/coreboot_table.c')
-rw-r--r-- | arch/x86/lib/coreboot_table.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/x86/lib/coreboot_table.c b/arch/x86/lib/coreboot_table.c index cb45a79..ceab3cf 100644 --- a/arch/x86/lib/coreboot_table.c +++ b/arch/x86/lib/coreboot_table.c @@ -9,6 +9,37 @@ #include <asm/coreboot_tables.h> #include <asm/e820.h> +DECLARE_GLOBAL_DATA_PTR; + +int high_table_reserve(void) +{ + /* adjust stack pointer to reserve space for configuration tables */ + gd->arch.high_table_limit = gd->start_addr_sp; + gd->start_addr_sp -= CONFIG_HIGH_TABLE_SIZE; + gd->arch.high_table_ptr = gd->start_addr_sp; + + /* clear the memory */ + memset((void *)gd->arch.high_table_ptr, 0, CONFIG_HIGH_TABLE_SIZE); + + gd->start_addr_sp &= ~0xf; + + return 0; +} + +void *high_table_malloc(size_t bytes) +{ + u32 new_ptr; + void *ptr; + + new_ptr = gd->arch.high_table_ptr + bytes; + if (new_ptr >= gd->arch.high_table_limit) + return NULL; + ptr = (void *)gd->arch.high_table_ptr; + gd->arch.high_table_ptr = new_ptr; + + return ptr; +} + /** * cb_table_init() - initialize a coreboot table header * |