diff options
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/intel/bd82x6x/bootblock.c | 21 |
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); |