Marc Jones (marcj303@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/96
-gerrit
commit 8b860896689f7e5360d86a2861600d10240a83d6 Author: Scott Duplichan scott@notabs.org Date: Wed Jul 13 17:34:16 2011 -0600
Move AMD SB800 early clock setup.
Move the AMD SB800 early clock setup code that is needed for early serial port operation from mainboard/romstage.c to sb800/bootblock.c. This prevents code duplication and simplifies porting.
Change-Id: I615cfec96c9f202d9c154dc6674ec7cbcf4090c3 Signed-off-by: Scott Duplichan scott@notabs.org Signed-off-by: Marc Jones marcj303@gmail.com --- src/mainboard/amd/persimmon/romstage.c | 15 --------------- src/mainboard/asrock/e350m1/romstage.c | 15 --------------- src/southbridge/amd/cimx/sb800/bootblock.c | 21 +++++++++++++++++++++ 3 files changed, 21 insertions(+), 30 deletions(-)
diff --git a/src/mainboard/amd/persimmon/romstage.c b/src/mainboard/amd/persimmon/romstage.c index 5ef5557..dfc2b6a 100644 --- a/src/mainboard/amd/persimmon/romstage.c +++ b/src/mainboard/amd/persimmon/romstage.c @@ -55,21 +55,6 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx) // all cores: set pstate 0 (1600 MHz) early to save a few ms of boot time __writemsr (0xc0010062, 0);
- if (boot_cpu()) - { - u8 reg8; - // SB800: program AcpiMmioEn to enable MMIO access to MiscCntrl register - outb(0x24, 0xCD6); - reg8 = inb(0xCD7); - reg8 |= 1; - reg8 &= ~(1 << 1); - outb(reg8, 0xCD7); - - // program SB800 MiscCntrl - *(volatile u32 *)(0xFED80000+0xE00+0x40) &= ~((1 << 0) | (1 << 2)); /* 48Mhz */ - *(volatile u32 *)(0xFED80000+0xE00+0x40) |= 1 << 1; /* 48Mhz */ - } - if (!cpu_init_detectedx && boot_cpu()) { post_code(0x30); sb_poweron_init(); diff --git a/src/mainboard/asrock/e350m1/romstage.c b/src/mainboard/asrock/e350m1/romstage.c index 29df530..38790cd 100644 --- a/src/mainboard/asrock/e350m1/romstage.c +++ b/src/mainboard/asrock/e350m1/romstage.c @@ -55,21 +55,6 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx) // all cores: set pstate 0 (1600 MHz) early to save a few ms of boot time __writemsr(0xc0010062, 0);
- if (boot_cpu()) { - u8 reg8; - // SB800: Program AcpiMmioEn to enable MMIO access to MiscCntrl register - outb(0x24, 0xCD6); - reg8 = inb(0xCD7); - reg8 |= 1; - reg8 &= ~(1 << 1); - outb(0x24, 0xCD6); - outb(reg8, 0xCD7); - - // Program SB800 MiscCntrl - *(volatile u32 *)(0xFED80000 + 0xE00 + 0x40) &= ~((1 << 0) | (1 << 2)); /* 48Mhz */ - *(volatile u32 *)(0xFED80000 + 0xE00 + 0x40) |= 1 << 1; /* 48Mhz */ - } - if (!cpu_init_detectedx && boot_cpu()) { post_code(0x30); sb_poweron_init(); diff --git a/src/southbridge/amd/cimx/sb800/bootblock.c b/src/southbridge/amd/cimx/sb800/bootblock.c index 170276a..593bd6b 100644 --- a/src/southbridge/amd/cimx/sb800/bootblock.c +++ b/src/southbridge/amd/cimx/sb800/bootblock.c @@ -84,10 +84,31 @@ static void enable_spi_fast_mode(void) pci_io_write_config32(dev, 0xa0, save); }
+static void enable_clocks(void) +{ + u8 reg8; + u32 reg32; + volatile u32 *acpi_mmio = (void *) (0xFED80000 + 0xE00 + 0x40); + + // Program AcpiMmioEn to enable MMIO access to MiscCntrl register + outb(0x24, 0xCD6); + reg8 = inb(0xCD7); + reg8 |= 1; + reg8 &= ~(1 << 1); + outb(reg8, 0xCD7); + + // Program SB800 MiscCntrl Device_CLK1_sel for 48 MHz (default is 14 MHz) + reg32 = *acpi_mmio; + reg32 &= ~((1 << 0) | (1 << 2)); + reg32 |= 1 << 1; + *acpi_mmio = reg32; +} + static void bootblock_southbridge_init(void) { /* Setup the rom access for 2M */ enable_rom(); enable_prefetch(); enable_spi_fast_mode(); + enable_clocks(); }