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authorOskar Enoksson <enok@lysator.liu.se>2014-02-11 22:51:03 +0100
committerAlexandru Gagniuc <mr.nuke.me@gmail.com>2014-02-11 23:56:28 +0100
commitaaedecaea4748ca656c5fdf0fae529b9e7b5408d (patch)
tree03fbe81a924657f18a861359911994af1767dd14
parentd907a3402e347633bac09013050a3d290c27d1f8 (diff)
downloadcoreboot-aaedecaea4748ca656c5fdf0fae529b9e7b5408d.tar.xz
hp/dl145_g1: Adding FID/VID and Powernow ACPI
Add cool-n-quiet functionality which allows the OS to dynamic alter CPU voltage and frequency change in order to save power e.g. when the CPU load is low. Change-Id: I4c895a56bcf571d4276af192aeef87d120143063 Signed-off-by: Oskar Enoksson <enok@lysator.liu.se> Reviewed-on: http://review.coreboot.org/5186 Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins)
-rw-r--r--src/mainboard/hp/dl145_g1/Kconfig2
-rw-r--r--src/mainboard/hp/dl145_g1/acpi_tables.c5
-rw-r--r--src/mainboard/hp/dl145_g1/romstage.c33
3 files changed, 40 insertions, 0 deletions
diff --git a/src/mainboard/hp/dl145_g1/Kconfig b/src/mainboard/hp/dl145_g1/Kconfig
index 94189ce4f6..2768007fbc 100644
--- a/src/mainboard/hp/dl145_g1/Kconfig
+++ b/src/mainboard/hp/dl145_g1/Kconfig
@@ -12,6 +12,8 @@ config BOARD_SPECIFIC_OPTIONS # dummy
select HAVE_PIRQ_TABLE
select HAVE_MP_TABLE
select BOARD_ROMSIZE_KB_512
+ select SET_FIDVID
+ select SET_FIDVID_DEBUG
select RAMINIT_SYSINFO
# select SB_HT_CHAIN_UNITID_OFFSET_ONLY
select QRANK_DIMM_SUPPORT
diff --git a/src/mainboard/hp/dl145_g1/acpi_tables.c b/src/mainboard/hp/dl145_g1/acpi_tables.c
index dd96318f58..c94688ec1a 100644
--- a/src/mainboard/hp/dl145_g1/acpi_tables.c
+++ b/src/mainboard/hp/dl145_g1/acpi_tables.c
@@ -21,6 +21,7 @@
#include <cpu/amd/amdk8_sysconf.h>
#include "northbridge/amd/amdk8/acpi.h"
#include "mb_sysconf.h"
+#include <cpu/amd/model_fxx_powernow.h>
#define DUMP_ACPI_TABLES 0
@@ -163,6 +164,10 @@ unsigned long acpi_fill_madt(unsigned long current)
unsigned long acpi_fill_ssdt_generator(unsigned long current, const char *oem_table_id) {
k8acpi_write_vars();
+#if CONFIG_SET_FIDVID
+ amd_model_fxx_generate_powernow(pm_base + 0x10, 6, 1);
+ acpigen_write_mainboard_resources("\\_SB.PCI0.MBRS", "_CRS");
+#endif
return (unsigned long) (acpigen_get_current());
}
diff --git a/src/mainboard/hp/dl145_g1/romstage.c b/src/mainboard/hp/dl145_g1/romstage.c
index 67ce9c1f01..94771ddb9b 100644
--- a/src/mainboard/hp/dl145_g1/romstage.c
+++ b/src/mainboard/hp/dl145_g1/romstage.c
@@ -82,6 +82,9 @@ static inline int spd_read_byte(unsigned device, unsigned address)
#include "cpu/amd/dualcore/dualcore.c"
#include <spd.h>
#include "cpu/amd/model_fxx/init_cpus.c"
+#if CONFIG_SET_FIDVID
+#include "cpu/amd/model_fxx/fidvid.c"
+#endif
#define RC0 ((1<<1)<<8)
#define RC1 ((1<<2)<<8)
@@ -126,6 +129,33 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx)
#endif
ht_setup_chains_x(sysinfo);
+#if CONFIG_SET_FIDVID
+ /* Check to see if processor is capable of changing FIDVID */
+ /* otherwise it will throw a GP# when reading FIDVID_STATUS */
+ struct cpuid_result cpuid1 = cpuid(0x80000007);
+ if ((cpuid1.edx & 0x6) == 0x6) {
+ {
+ /* Read FIDVID_STATUS */
+ msr_t msr;
+ msr=rdmsr(0xc0010042);
+ print_debug("begin msr fid, vid "); print_debug_hex32( msr.hi ); print_debug_hex32(msr.lo); print_debug("\n");
+ }
+
+ enable_fid_change();
+ enable_fid_change_on_sb(sysinfo->sbbusn, sysinfo->sbdn);
+ init_fidvid_bsp(bsp_apicid);
+
+ // show final fid and vid
+ {
+ msr_t msr;
+ msr=rdmsr(0xc0010042);
+ print_debug("end msr fid, vid "); print_debug_hex32( msr.hi ); print_debug_hex32(msr.lo); print_debug("\n");
+ }
+
+ } else {
+ print_debug("Changing FIDVID not supported\n");
+ }
+#endif
needs_reset |= optimize_link_coherent_ht();
needs_reset |= optimize_link_incoherent_ht(sysinfo);
@@ -155,6 +185,9 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx)
fill_mem_ctrl(sysinfo->nodes, sysinfo->ctrl, spd_addr);
memreset_setup();
+#if CONFIG_SET_FIDVID
+ init_timer(); // Need to use TMICT to synchronize FID/VID
+#endif
sdram_initialize(sysinfo->nodes, sysinfo->ctrl, sysinfo);
//dump_pci_devices();