aboutsummaryrefslogtreecommitdiff
path: root/src/cpu
diff options
context:
space:
mode:
Diffstat (limited to 'src/cpu')
-rw-r--r--src/cpu/intel/model_206ax/Makefile.inc3
-rw-r--r--src/cpu/intel/model_206ax/model_206ax_init.c17
-rw-r--r--src/cpu/intel/smm/gen1/Makefile.inc1
-rw-r--r--src/cpu/intel/smm/gen1/smi.h7
-rw-r--r--src/cpu/intel/smm/gen1/smmrelocate.c (renamed from src/cpu/intel/model_206ax/smmrelocate.c)140
5 files changed, 74 insertions, 94 deletions
diff --git a/src/cpu/intel/model_206ax/Makefile.inc b/src/cpu/intel/model_206ax/Makefile.inc
index c296fd9fd5..6e0dcf61a9 100644
--- a/src/cpu/intel/model_206ax/Makefile.inc
+++ b/src/cpu/intel/model_206ax/Makefile.inc
@@ -1,5 +1,6 @@
ramstage-y += model_206ax_init.c
subdirs-y += ../../x86/name
+subdirs-y += ../smm/gen1
ramstage-y += acpi.c
@@ -8,5 +9,3 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += finalize.c
cpu_microcode-$(CONFIG_CPU_MICROCODE_CBFS_GENERATE) += microcode_blob.c
cpu_incs += $(src)/cpu/intel/model_206ax/cache_as_ram.inc
-
-ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smmrelocate.c
diff --git a/src/cpu/intel/model_206ax/model_206ax_init.c b/src/cpu/intel/model_206ax/model_206ax_init.c
index 74ad0e8372..2028af0196 100644
--- a/src/cpu/intel/model_206ax/model_206ax_init.c
+++ b/src/cpu/intel/model_206ax/model_206ax_init.c
@@ -35,6 +35,9 @@
#include <pc80/mc146818rtc.h>
#include "model_206ax.h"
#include "chip.h"
+#include <cpu/intel/smm/gen1/smi.h>
+
+#define CORE_THREAD_COUNT_MSR 0x35
/*
* List of supported C-states in this processor
@@ -473,6 +476,20 @@ static void configure_mca(void)
wrmsr(IA32_MC0_STATUS + (i * 4), msr);
}
+int cpu_get_apic_id_map(int *apic_id_map)
+{
+ msr_t msr;
+ int num_cpus, i;
+
+ msr = rdmsr(CORE_THREAD_COUNT_MSR);
+ num_cpus = msr.lo & 0xffff;
+
+ for (i = 0; i < num_cpus && i < CONFIG_MAX_CPUS; i++)
+ apic_id_map[i] = i;
+
+ return num_cpus;
+}
+
/*
* Initialize any extra cores/threads in this package.
*/
diff --git a/src/cpu/intel/smm/gen1/Makefile.inc b/src/cpu/intel/smm/gen1/Makefile.inc
new file mode 100644
index 0000000000..09367102b1
--- /dev/null
+++ b/src/cpu/intel/smm/gen1/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smmrelocate.c
diff --git a/src/cpu/intel/smm/gen1/smi.h b/src/cpu/intel/smm/gen1/smi.h
new file mode 100644
index 0000000000..475ef4b0cf
--- /dev/null
+++ b/src/cpu/intel/smm/gen1/smi.h
@@ -0,0 +1,7 @@
+/* These helpers are for performing SMM relocation. */
+void southbridge_smm_init(void);
+void southbridge_trigger_smi(void);
+void southbridge_clear_smi_status(void);
+void northbridge_get_tseg_base_and_size(u32 *tsegmb, u32 *tseg_size);
+int cpu_get_apic_id_map(int *apic_id_map);
+void northbridge_write_smram(u8 smram);
diff --git a/src/cpu/intel/model_206ax/smmrelocate.c b/src/cpu/intel/smm/gen1/smmrelocate.c
index 461286f7ab..bc14444dbf 100644
--- a/src/cpu/intel/model_206ax/smmrelocate.c
+++ b/src/cpu/intel/smm/gen1/smmrelocate.c
@@ -17,6 +17,9 @@
* Foundation, Inc.
*/
+/* SMM relocation with intention to work for i945-ivybridge.
+ Right now used for sandybridge and ivybridge. */
+
#include <types.h>
#include <string.h>
#include <device/device.h>
@@ -27,19 +30,22 @@
#include <cpu/x86/mtrr.h>
#include <cpu/x86/smm.h>
#include <console/console.h>
-#include <northbridge/intel/sandybridge/sandybridge.h>
-#include <southbridge/intel/bd82x6x/pch.h>
-#include "model_206ax.h"
+#include "smi.h"
+
+#define SMRR_SUPPORTED (1<<11)
-#define EMRRphysBase_MSR 0x1f4
-#define EMRRphysMask_MSR 0x1f5
-#define UNCORE_EMRRphysBase_MSR 0x2f4
-#define UNCORE_EMRRphysMask_MSR 0x2f5
+#define D_OPEN (1 << 6)
+#define D_CLS (1 << 5)
+#define D_LCK (1 << 4)
+#define G_SMRAME (1 << 3)
+#define C_BASE_SEG ((0 << 2) | (1 << 1) | (0 << 0))
-#define CORE_THREAD_COUNT_MSR 0x35
+struct ied_header {
+ char signature[10];
+ u32 size;
+ u8 reserved[34];
+} __attribute__ ((packed));
-#define SMRR_SUPPORTED (1<<11)
-#define EMRR_SUPPORTED (1<<12)
struct smm_relocation_params {
u32 smram_base;
@@ -48,10 +54,6 @@ struct smm_relocation_params {
u32 ied_size;
msr_t smrr_base;
msr_t smrr_mask;
- msr_t emrr_base;
- msr_t emrr_mask;
- msr_t uncore_emrr_base;
- msr_t uncore_emrr_mask;
};
/* This gets filled in and used during relocation. */
@@ -65,24 +67,6 @@ static inline void write_smrr(struct smm_relocation_params *relo_params)
wrmsr(SMRRphysMask_MSR, relo_params->smrr_mask);
}
-static inline void write_emrr(struct smm_relocation_params *relo_params)
-{
- printk(BIOS_DEBUG, "Writing EMRR. base = 0x%08x, mask=0x%08x\n",
- relo_params->emrr_base.lo, relo_params->emrr_mask.lo);
- wrmsr(EMRRphysBase_MSR, relo_params->emrr_base);
- wrmsr(EMRRphysMask_MSR, relo_params->emrr_mask);
-}
-
-static inline void write_uncore_emrr(struct smm_relocation_params *relo_params)
-{
- printk(BIOS_DEBUG,
- "Writing UNCORE_EMRR. base = 0x%08x, mask=0x%08x\n",
- relo_params->uncore_emrr_base.lo,
- relo_params->uncore_emrr_mask.lo);
- wrmsr(UNCORE_EMRRphysBase_MSR, relo_params->uncore_emrr_base);
- wrmsr(UNCORE_EMRRphysMask_MSR, relo_params->uncore_emrr_mask);
-}
-
/* The relocation work is actually performed in SMM context, but the code
* resides in the ramstage module. This occurs by trampolining from the default
* SMRAM entry point to here. */
@@ -124,40 +108,18 @@ static void asmlinkage cpu_smm_do_relocation(void *arg)
printk(BIOS_DEBUG, "New SMBASE=0x%08x IEDBASE=0x%08x @ %p\n",
save_state->smbase, save_state->iedbase, save_state);
- /* Write EMRR and SMRR MSRs based on indicated support. */
+ /* Write SMRR MSRs based on indicated support. */
mtrr_cap = rdmsr(MTRRcap_MSR);
if (mtrr_cap.lo & SMRR_SUPPORTED)
write_smrr(relo_params);
- if (mtrr_cap.lo & EMRR_SUPPORTED) {
- write_emrr(relo_params);
- /* UNCORE_EMRR msrs are package level. Therefore, only
- * configure these MSRs on the BSP. */
- if (cpu == 0)
- write_uncore_emrr(relo_params);
- }
-
southbridge_clear_smi_status();
}
-static u32 northbridge_get_base_reg(device_t dev, int reg)
-{
- u32 value;
-
- value = pci_read_config32(dev, reg);
- /* Base registers are at 1MiB granularity. */
- value &= ~((1 << 20) - 1);
- return value;
-}
-
-static void fill_in_relocation_params(device_t dev,
- struct smm_relocation_params *params)
+static void fill_in_relocation_params(struct smm_relocation_params *params)
{
u32 tseg_size;
u32 tsegmb;
- u32 bgsm;
- u32 emrr_base;
- u32 emrr_size;
int phys_bits;
/* All range registers are aligned to 4KiB */
const u32 rmask = ~((1 << 12) - 1);
@@ -170,9 +132,7 @@ static void fill_in_relocation_params(device_t dev,
* SMRAM range as well as the IED range. However, the SMRAM available
* to the handler is 4MiB since the IEDRAM lives TSEGMB + 4MiB.
*/
- tsegmb = northbridge_get_base_reg(dev, TSEG);
- bgsm = northbridge_get_base_reg(dev, BGSM);
- tseg_size = bgsm - tsegmb;
+ northbridge_get_tseg_base_and_size(&tsegmb, &tseg_size);
params->smram_base = tsegmb;
params->smram_size = 4 << 20;
@@ -184,27 +144,9 @@ static void fill_in_relocation_params(device_t dev,
params->smrr_base.hi = 0;
params->smrr_mask.lo = (~(tseg_size - 1) & rmask) | MTRRphysMaskValid;
params->smrr_mask.hi = 0;
-
- /* The EMRR and UNCORE_EMRR are at IEDBASE + 2MiB */
- emrr_base = (params->ied_base + (2 << 20)) & rmask;
- emrr_size = params->ied_size - (2 << 20);
-
- /* EMRR has 46 bits of valid address aligned to 4KiB. It's dependent
- * on the number of physical address bits supported. */
- params->emrr_base.lo = emrr_base | MTRR_TYPE_WRBACK;
- params->emrr_base.hi = 0;
- params->emrr_mask.lo = (~(emrr_size - 1) & rmask) | MTRRphysMaskValid;
- params->emrr_mask.hi = (1 << (phys_bits - 32)) - 1;
-
- /* UNCORE_EMRR has 39 bits of valid address aligned to 4KiB. */
- params->uncore_emrr_base.lo = emrr_base;
- params->uncore_emrr_base.hi = 0;
- params->uncore_emrr_mask.lo = (~(emrr_size - 1) & rmask) |
- MTRRphysMaskValid;
- params->uncore_emrr_mask.hi = (1 << (39 - 32)) - 1;
}
-static int install_relocation_handler(int num_cpus,
+static int install_relocation_handler(int *apic_id_map, int num_cpus,
struct smm_relocation_params *relo_params)
{
/* The default SMM entry happens serially at the default location.
@@ -221,7 +163,13 @@ static int install_relocation_handler(int num_cpus,
.handler_arg = (void *)relo_params,
};
- return smm_setup_relocation_handler(&smm_params);
+ if (smm_setup_relocation_handler(&smm_params))
+ return -1;
+ int i;
+ for (i = 0; i < num_cpus; i++) {
+ smm_params.runtime->apic_id_to_cpu[i] = apic_id_map[i];
+ }
+ return 0;
}
static void setup_ied_area(struct smm_relocation_params *params)
@@ -243,7 +191,7 @@ static void setup_ied_area(struct smm_relocation_params *params)
memset(ied_base + (1 << 20), 0, (32 << 10));
}
-static int install_permanent_handler(int num_cpus,
+static int install_permanent_handler(int *apic_id_map, int num_cpus,
struct smm_relocation_params *relo_params)
{
/* There are num_cpus concurrent stacks and num_cpus concurrent save
@@ -258,38 +206,43 @@ static int install_permanent_handler(int num_cpus,
printk(BIOS_DEBUG, "Installing SMM handler to 0x%08x\n",
relo_params->smram_base);
- return smm_load_module((void *)relo_params->smram_base,
- relo_params->smram_size, &smm_params);
+ if (smm_load_module((void *)relo_params->smram_base,
+ relo_params->smram_size, &smm_params))
+ return -1;
+ int i;
+ for (i = 0; i < num_cpus; i++) {
+ smm_params.runtime->apic_id_to_cpu[i] = apic_id_map[i];
+ }
+ return 0;
}
static int cpu_smm_setup(void)
{
- device_t dev;
int num_cpus;
- msr_t msr;
+ int apic_id_map[CONFIG_MAX_CPUS];
printk(BIOS_DEBUG, "Setting up SMI for CPU\n");
- dev = dev_find_slot(0, PCI_DEVFN(0, 0));
+ fill_in_relocation_params(&smm_reloc_params);
- fill_in_relocation_params(dev, &smm_reloc_params);
+ /* enable the SMM memory window */
+ northbridge_write_smram(D_OPEN | G_SMRAME | C_BASE_SEG);
setup_ied_area(&smm_reloc_params);
- msr = rdmsr(CORE_THREAD_COUNT_MSR);
- num_cpus = msr.lo & 0xffff;
+ num_cpus = cpu_get_apic_id_map(apic_id_map);
if (num_cpus > CONFIG_MAX_CPUS) {
printk(BIOS_CRIT,
"Error: Hardware CPUs (%d) > MAX_CPUS (%d)\n",
num_cpus, CONFIG_MAX_CPUS);
}
- if (install_relocation_handler(num_cpus, &smm_reloc_params)) {
+ if (install_relocation_handler(apic_id_map, num_cpus, &smm_reloc_params)) {
printk(BIOS_CRIT, "SMM Relocation handler install failed.\n");
return -1;
}
- if (install_permanent_handler(num_cpus, &smm_reloc_params)) {
+ if (install_permanent_handler(apic_id_map, num_cpus, &smm_reloc_params)) {
printk(BIOS_CRIT, "SMM Permanent handler install failed.\n");
return -1;
}
@@ -298,6 +251,9 @@ static int cpu_smm_setup(void)
/* TODO(adurbin): Is this really needed? */
wbinvd();
+ /* close the SMM memory window and enable normal SMM */
+ northbridge_write_smram(G_SMRAME | C_BASE_SEG);
+
return 0;
}
@@ -328,6 +284,6 @@ void smm_lock(void)
* make the SMM registers writable again.
*/
printk(BIOS_DEBUG, "Locking SMM.\n");
- pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), SMRAM,
- D_LCK | G_SMRAME | C_BASE_SEG);
+
+ northbridge_write_smram(D_LCK | G_SMRAME | C_BASE_SEG);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-18 06:26:15 +0000