From 270e300e12c43aa1fb0124d58de2883d53f85f3b Mon Sep 17 00:00:00 2001 From: Martin Roth Date: Sun, 14 Dec 2014 15:43:45 -0700 Subject: fsp_baytrail: Initialize LPC pads in bootblock for port 80 Port 80h codes were coming out of bootblock and romstage scrambled, or were not coming out at all. Initializing the LPC signal pads as LPC fixes that issue. Change-Id: I16943513f2eb6fe8fa58766aaa82dac182440c34 Signed-off-by: Martin Roth Reviewed-on: http://review.coreboot.org/7802 Tested-by: build bot (Jenkins) Reviewed-by: Werner Zeh Reviewed-by: Stefan Reinauer --- src/soc/intel/fsp_baytrail/bootblock/bootblock.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'src/soc/intel/fsp_baytrail/bootblock/bootblock.c') diff --git a/src/soc/intel/fsp_baytrail/bootblock/bootblock.c b/src/soc/intel/fsp_baytrail/bootblock/bootblock.c index 1623f04da1..e8f5572ef7 100644 --- a/src/soc/intel/fsp_baytrail/bootblock/bootblock.c +++ b/src/soc/intel/fsp_baytrail/bootblock/bootblock.c @@ -27,6 +27,7 @@ #include #include #include +#include #include /* @@ -100,6 +101,19 @@ static void setup_mmconfig(void) pci_io_write_config32(IOSF_PCI_DEV, MCR_REG, reg); } +static const uint8_t lpc_pads[12] = { + 70, 68, 67, 66, 69, 71, 65, 72, 86, 90, 88, 92, +}; + +static void set_up_lpc_pads(void) +{ + uint32_t reg = IO_BASE_ADDRESS | SET_BAR_ENABLE; + pci_write_config32(LPC_BDF, IOBASE, reg); + + for (reg = 0; reg < 12; reg++) + score_select_func(lpc_pads[reg], 1); +} + static void bootblock_cpu_init(void) { @@ -109,4 +123,5 @@ static void bootblock_cpu_init(void) setup_mmconfig(); enable_rom_caching(); enable_spi_prefetch(); + set_up_lpc_pads(); } -- cgit v1.2.3