summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--src/southbridge/intel/bd82x6x/bootblock.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/southbridge/intel/bd82x6x/bootblock.c b/src/southbridge/intel/bd82x6x/bootblock.c
index 0191bbfc7f..7d0db7fba1 100644
--- a/src/southbridge/intel/bd82x6x/bootblock.c
+++ b/src/southbridge/intel/bd82x6x/bootblock.c
@@ -65,6 +65,26 @@ static void enable_port80_on_lpc(void)
#endif
}
+static void set_spi_speed(void)
+{
+ u32 fdod;
+ u8 ssfc;
+
+ /* Observe SPI Descriptor Component Section 0 */
+ RCBA32(0x38b0) = 0x1000;
+
+ /* Extract the Write/Erase SPI Frequency from descriptor */
+ fdod = RCBA32(0x38b4);
+ fdod >>= 24;
+ fdod &= 7;
+
+ /* Set Software Sequence frequency to match */
+ ssfc = RCBA8(0x3893);
+ ssfc &= ~7;
+ ssfc |= fdod;
+ RCBA8(0x3893) = ssfc;
+}
+
static void bootblock_southbridge_init(void)
{
#if CONFIG_COLLECT_TIMESTAMPS
@@ -72,6 +92,7 @@ static void bootblock_southbridge_init(void)
#endif
enable_spi_prefetch();
enable_port80_on_lpc();
+ set_spi_speed();
/* Enable upper 128bytes of CMOS */
RCBA32(RC) = (1 << 2);