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authorAaron Durbin <adurbin@chromium.org>2012-12-19 11:31:17 -0600
committerRonald G. Minnich <rminnich@gmail.com>2013-03-17 22:53:31 +0100
commit239c2e843f976d5915964c8cb1923305c574f8b5 (patch)
treefc9d5d2e4b5ec2e85e89f53fe282bec6ac929e2c /src/northbridge
parent218a6864ff9528ecdb381d91991c9045bbb6843f (diff)
downloadcoreboot-239c2e843f976d5915964c8cb1923305c574f8b5.tar.xz
haswell platforms: restructure romstage main
There was a mix of setup code sprinkled across the various components: southbridge code in the northbridge, etc. This commit reorganizes the code so that northbridge code doesn't initialize southbridge components. Additionally, the calling dram initialization no longer calls out to ME code. The main() function in the mainboard calls the necessary ME functions before and after dram initialization. The biggest change is the addition of an early_pch_init() function which initializes the BARs, GPIOs, and RCBA configuration. It is also responsible for reporting back to the caller if the board is being woken up from S3. The one sequence difference is that the RCBA config is performed before claling the reference code. Lastly the rcba configuration was changed to be table driven so that different board/configurations can use the same code. It should be possible to have board/configuration specific gpio and rcba configuration while reusing the romstage code. Change-Id: I830e41b426261dd686a2701ce054fc39f296dffa Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2681 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/northbridge')
-rw-r--r--src/northbridge/intel/haswell/early_init.c22
-rw-r--r--src/northbridge/intel/haswell/raminit.c17
2 files changed, 5 insertions, 34 deletions
diff --git a/src/northbridge/intel/haswell/early_init.c b/src/northbridge/intel/haswell/early_init.c
index 505fbf1125..681af42adb 100644
--- a/src/northbridge/intel/haswell/early_init.c
+++ b/src/northbridge/intel/haswell/early_init.c
@@ -29,20 +29,6 @@
static void haswell_setup_bars(void)
{
- /* Setting up Southbridge. In the northbridge code. */
- printk(BIOS_DEBUG, "Setting up static southbridge registers...");
- pci_write_config32(PCI_DEV(0, 0x1f, 0), RCBA, DEFAULT_RCBA | 1);
-
- pci_write_config32(PCI_DEV(0, 0x1f, 0), PMBASE, DEFAULT_PMBASE | 1);
- pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x44 /* ACPI_CNTL */ , 0x80); /* Enable ACPI BAR */
-
- printk(BIOS_DEBUG, " done.\n");
-
- printk(BIOS_DEBUG, "Disabling Watchdog reboot...");
- RCBA32(GCS) = RCBA32(GCS) | (1 << 5); /* No reset */
- outw((1 << 11), DEFAULT_PMBASE | 0x60 | 0x08); /* halt timer */
- printk(BIOS_DEBUG, " done.\n");
-
printk(BIOS_DEBUG, "Setting up static northbridge registers...");
/* Set up all hardcoded northbridge BARs */
pci_write_config32(PCI_DEV(0, 0x00, 0), EPBAR, DEFAULT_EPBAR | 1);
@@ -62,14 +48,6 @@ static void haswell_setup_bars(void)
pci_write_config8(PCI_DEV(0, 0x00, 0), PAM6, 0x33);
printk(BIOS_DEBUG, " done.\n");
-
-#if CONFIG_ELOG_BOOT_COUNT
- /* Increment Boot Counter except when resuming from S3 */
- if ((inw(DEFAULT_PMBASE + PM1_STS) & WAK_STS) &&
- ((inl(DEFAULT_PMBASE + PM1_CNT) >> 10) & 7) == SLP_TYP_S3)
- return;
- boot_count_increment();
-#endif
}
static void haswell_setup_graphics(void)
diff --git a/src/northbridge/intel/haswell/raminit.c b/src/northbridge/intel/haswell/raminit.c
index 0c68e60707..e2b085b3fd 100644
--- a/src/northbridge/intel/haswell/raminit.c
+++ b/src/northbridge/intel/haswell/raminit.c
@@ -32,8 +32,6 @@
#include "pei_data.h"
#include "haswell.h"
-/* Management Engine is in the southbridge */
-#include "southbridge/intel/lynxpoint/me.h"
#if CONFIG_CHROMEOS
#include <vendorcode/google/chromeos/chromeos.h>
#else
@@ -152,12 +150,6 @@ void sdram_initialize(struct pei_data *pei_data)
struct sys_info sysinfo;
unsigned long entry;
- report_platform_info();
-
- /* Wait for ME to be ready */
- intel_early_me_init();
- intel_early_me_uma_size();
-
printk(BIOS_DEBUG, "Starting UEFI PEI System Agent\n");
memset(&sysinfo, 0, sizeof(sysinfo));
@@ -216,8 +208,6 @@ void sdram_initialize(struct pei_data *pei_data)
version >> 24 , (version >> 16) & 0xff,
(version >> 8) & 0xff, version & 0xff);
- intel_early_me_status();
-
report_memory_config();
/* S3 resume: don't save scrambler seed or MRC data */
@@ -232,7 +222,10 @@ struct cbmem_entry *get_cbmem_toc(void)
unsigned long get_top_of_ram(void)
{
- /* Base of TSEG is top of usable DRAM */
+ /*
+ * Base of TSEG is top of usable DRAM below 4GiB. The register has
+ * 1 MiB alignement.
+ */
u32 tom = pci_read_config32(PCI_DEV(0,0,0), TSEG);
- return (unsigned long) tom;
+ return (unsigned long) tom & ~((1 << 20) - 1);
}