diff options
Diffstat (limited to 'arch/i386/kernel/setup.c')
| -rw-r--r-- | arch/i386/kernel/setup.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c index 4dd8edf76..d4800f987 100644 --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -92,6 +92,9 @@ extern char empty_zero_page[PAGE_SIZE]; */ #define PARAM empty_zero_page #define EXT_MEM_K (*(unsigned short *) (PARAM+2)) +#ifndef STANDARD_MEMORY_BIOS_CALL +#define ALT_MEM_K (*(unsigned long *) (PARAM+0x1e0)) +#endif #ifdef CONFIG_APM #define APM_BIOS_INFO (*(struct apm_bios_info *) (PARAM+64)) #endif @@ -120,6 +123,7 @@ __initfunc(void setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * memory_end_p)) { unsigned long memory_start, memory_end; + unsigned long memory_alt_end; char c = ' ', *to = command_line, *from = COMMAND_LINE; int len = 0; static unsigned char smptrap=0; @@ -143,10 +147,15 @@ __initfunc(void setup_arch(char **cmdline_p, BIOS_revision = SYS_DESC_TABLE.table[2]; } aux_device_present = AUX_DEVICE_INFO; -#ifdef STANDARD_MEMORY_BIOS_CALL memory_end = (1<<20) + (EXT_MEM_K<<10); -#else - memory_end = (1<<20) + (EXT_MEM_K*64L*1024L); /* 64kb chunks */ +#ifndef STANDARD_MEMORY_BIOS_CALL + memory_alt_end = (1<<20) + (ALT_MEM_K<<10); + if (memory_alt_end > memory_end) { + printk("Memory: sized by int13 0e801h\n"); + memory_end = memory_alt_end; + } + else + printk("Memory: sized by int13 088h\n"); #endif memory_end &= PAGE_MASK; #ifdef CONFIG_BLK_DEV_RAM |