diff options
Diffstat (limited to 'src/cpu/x86')
| -rw-r--r-- | src/cpu/x86/lapic/lapic_cpu_init.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/cpu/x86/lapic/lapic_cpu_init.c b/src/cpu/x86/lapic/lapic_cpu_init.c index 1ec13845f3..1562114b39 100644 --- a/src/cpu/x86/lapic/lapic_cpu_init.c +++ b/src/cpu/x86/lapic/lapic_cpu_init.c @@ -31,6 +31,12 @@ static unsigned long get_valid_start_eip(unsigned long orig_start_eip) } #endif +#if HAVE_ACPI_RESUME == 1 +char *lowmem_backup; +char *lowmem_backup_ptr; +int lowmem_backup_size; +#endif + static void copy_secondary_start_to_1m_below(void) { #if _RAMBASE >= 0x100000 @@ -45,6 +51,17 @@ static void copy_secondary_start_to_1m_below(void) start_eip = get_valid_start_eip((unsigned long)_secondary_start); code_size = (unsigned long)_secondary_start_end - (unsigned long)_secondary_start; +#if HAVE_ACPI_RESUME == 1 + /* need to save it for RAM resume */ + lowmem_backup_size = code_size; + lowmem_backup = malloc(code_size); + lowmem_backup_ptr = (unsigned char *)start_eip; + + if (lowmem_backup == NULL) + die("Out of backup memory\n"); + + memcpy(lowmem_backup, lowmem_backup_ptr, lowmem_backup_size); +#endif /* copy the _secondary_start to the ram below 1M*/ memcpy((unsigned char *)start_eip, (unsigned char *)_secondary_start, code_size); |