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baytrail: load microcode in bootblock 

Start loading microcode in the bootblock. This way
no caching has been set up and cache-as-ram mode
will be running in a validated configruation (with ucode
patch).

BUG=chrome-os-partner:22858
BRANCH=None
TEST=Built and booted. Confirmed microcode is loaded.

Change-Id: I6fd1d8e55bcc9d799b11d9faed771ac50dc120a2
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/171861
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/4863
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Aaron Durbin 2013-10-04 11:15:48 -05:00 committed by Aaron Durbin
parent fd039f7f4d
commit c0270aa6d0
1 changed files with 12 additions and 3 deletions
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15
src/soc/intel/baytrail/bootblock/bootblock.c
View File

@ -22,6 +22,7 @@
#include <cpu/x86/msr.h> #include <cpu/x86/msr.h>
#include <cpu/x86/mtrr.h> #include <cpu/x86/mtrr.h>
#include <baytrail/iosf.h> #include <baytrail/iosf.h>
#include <cpu/intel/microcode/microcode.c>
static void set_var_mtrr(int reg, uint32_t base, uint32_t size, int type) static void set_var_mtrr(int reg, uint32_t base, uint32_t size, int type)
{ {
@ -49,12 +50,10 @@ static void enable_rom_caching(void)
wrmsr(MTRRdefType_MSR, msr); wrmsr(MTRRdefType_MSR, msr);
} }
static void bootblock_cpu_init(void) static void setup_mmconfig(void)
{ {
uint32_t reg; uint32_t reg;
enable_rom_caching();
/* Set up the MMCONF range. The register lives in the BUNIT. The /* Set up the MMCONF range. The register lives in the BUNIT. The
* IO variant of the config access needs to be used initially to * IO variant of the config access needs to be used initially to
* properly configure as the IOSF access registers live in PCI * properly configure as the IOSF access registers live in PCI
@ -68,3 +67,13 @@ static void bootblock_cpu_init(void)
IOSF_REG(BUNIT_MMCONF_REG) | IOSF_BYTE_EN; IOSF_REG(BUNIT_MMCONF_REG) | IOSF_BYTE_EN;
pci_io_write_config32(IOSF_PCI_DEV, MCR_REG, reg); pci_io_write_config32(IOSF_PCI_DEV, MCR_REG, reg);
} }
static void bootblock_cpu_init(void)
{
/* Allow memory-mapped PCI config access. */
setup_mmconfig();
/* Load microcode before any caching. */
intel_update_microcode_from_cbfs();
enable_rom_caching();
}