Factor out register mapping code
Corresponding to flashrom svn r113 and coreboot v2 svn r2691.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
diff --git a/flashrom.c b/flashrom.c
index a05def7..8ada918 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -99,6 +99,23 @@
return NULL;
}
+int map_flash_registers(struct flashchip *flash)
+{
+ volatile uint8_t *registers;
+ size_t size = flash->total_size * 1024;
+
+ registers = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+ fd_mem, (off_t) (0xFFFFFFFF - 0x400000 - size + 1));
+
+ if (registers == MAP_FAILED) {
+ perror("Can't mmap registers using " MEM_DEV);
+ exit(1);
+ }
+ flash->virtual_registers = registers;
+
+ return 0;
+}
+
struct flashchip *probe_flash(struct flashchip *flash)
{
volatile uint8_t *bios;