Enable 33 MHz fast mode SPI read early to reduce boot time.
Signed-off-by: Marshall Buschman <mbuschman@lucidmachines.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6625
2b7e53f0-3cfb-0310-b3e9-
8179ed1497e1
u32 val;
u8 reg8;
+ // early enable of SPI 33 MHz fast mode read
+ if (boot_cpu())
+ {
+ volatile u32 *spiBase = (void *) 0xa0000000;
+ u32 save;
+ __outdword (0xcf8, 0x8000a3a0);
+ save = __indword (0xcfc);
+ __outdword (0xcfc, (u32) spiBase | 2); // set temp MMIO base
+ spiBase [3] = (spiBase [3] & ~(3 << 14)) | (1 << 14);
+ spiBase [0] |= 1 << 18; // fast read enable
+ __outdword (0xcfc, save); // clear temp base
+ }
+
if (!cpu_init_detectedx && boot_cpu()) {
post_code(0x30);
sb_poweron_init();