Hi all,
I think I fixed the S3 suspend/resume on AMD which was broken since Stephan did
the change with cbmem :)
The patch does following:
1) wraps the s3 parts of chipset code/memory init code with if
CONFIG_HAVE_ACPI_RESUME == 1 getting rid of ugly define in romstage.c
2) the patch implements get_cbmem_toc in chipset specific way if defined.
On Intel targets it should be unchanged. On K8T890 the the cbmem_toc is read
from NVRAM. Why you ask? Because we cannot do it as on intel, because the
framebuffer might be there making it hard to look for it in memory (and remember
we need it so early that everying is uncached)
3) The patch removes hardcoded limits for suspend/resume save area (it was 1MB)
on intel. Now it computes right numbers itself.
4) it impelements saving the memory during CAR to reserved range in sane way.
First the sysinfo area (CAR data) is copied, then the rest after car is disabled
(cached copy is used). I changed bit also the the copy of CAR area is now done
uncached for target which I feel is more right.
I think I did not change the Intel suspend/resume behaviour but best would be if
someone can test it. Please note this patch was unfinished on my drive since
ages and it would be very nice to get it in to prevent bit rotten it again.
Now I feel it is done good way and should not break anything. I did a test with
abuild and it seems fine.
The Rachmann did suspend/resume support for Asus M2V he will post the patch
soon.
Signed-off-by: Rudolf Marek <r.ma...@assembler.cz>
Thanks,
Rudolf
Index: src/southbridge/via/vt8237r/vt8237r_early_smbus.c
===================================================================
--- src/southbridge/via/vt8237r/vt8237r_early_smbus.c.orig 2010-11-14 14:45:01.000000000 +0100
+++ src/southbridge/via/vt8237r/vt8237r_early_smbus.c 2010-11-21 17:59:01.000000000 +0100
@@ -316,9 +316,7 @@
pci_write_config8(dev, 0x41, 0x7f);
}
-#ifdef CONFIG_NORTHBRIDGE_AMD_K8 /* CN700 doesn't have the support yet */
-#define ACPI_IS_WAKEUP_EARLY 1
-
+#if CONFIG_HAVE_ACPI_RESUME == 1
static int acpi_is_wakeup_early(void) {
device_t dev;
u16 tmp;
Index: src/southbridge/via/k8t890/k8t890.h
===================================================================
--- src/southbridge/via/k8t890/k8t890.h.orig 2010-11-14 14:45:01.000000000 +0100
+++ src/southbridge/via/k8t890/k8t890.h 2010-11-22 00:32:18.000000000 +0100
@@ -31,6 +31,7 @@
/* The 256 bytes of NVRAM for S3 storage, 256B aligned */
#define K8T890_NVRAM_IO_BASE 0xf00
+#define K8T890_NVRAM_CBMEM_TOC 0xfc
#define K8T890_MMCONFIG_MBAR 0x61
#define K8T890_MULTIPLE_FN_EN 0x4f
Index: src/southbridge/via/k8t890/k8t890_early_car.c
===================================================================
--- src/southbridge/via/k8t890/k8t890_early_car.c.orig 2010-11-14 14:45:01.000000000 +0100
+++ src/southbridge/via/k8t890/k8t890_early_car.c 2010-11-22 00:05:59.000000000 +0100
@@ -23,16 +23,14 @@
*/
#include <stdlib.h>
+#include <cbmem.h>
+#include <arch/io.h>
#include "k8t890.h"
/* The 256 bytes of NVRAM for S3 storage, 256B aligned */
#define K8T890_NVRAM_IO_BASE 0xf00
#define K8T890_MULTIPLE_FN_EN 0x4f
-/* we provide S3 NVRAM to system */
-#define S3_NVRAM_EARLY 1
-
-
/* AMD K8 LDT0, LDT1, LDT2 Link Control Registers */
static u8 ldtreg[3] = {0x86, 0xa6, 0xc6};
@@ -155,3 +153,9 @@
printk(BIOS_DEBUG, "Loading %x of size %d to nvram pos:%d\n", * old_dword, size, nvram_pos-size);
return nvram_pos;
}
+
+/* this should be a function
+struct cbmem_entry *get_cbmem_toc(void) {
+*/
+
+#define get_cbmem_toc() ((struct cbmem_entry *) inl(K8T890_NVRAM_IO_BASE+K8T890_NVRAM_CBMEM_TOC))
Index: src/southbridge/via/k8t890/k8t890_host_ctrl.c
===================================================================
--- src/southbridge/via/k8t890/k8t890_host_ctrl.c.orig 2010-11-14 14:45:01.000000000 +0100
+++ src/southbridge/via/k8t890/k8t890_host_ctrl.c 2010-11-21 17:19:11.000000000 +0100
@@ -22,6 +22,8 @@
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include <console/console.h>
+#include <cbmem.h>
+#include <arch/io.h>
#include "k8t890.h"
/* this may be later merged */
@@ -111,6 +113,14 @@
pci_write_config8(dev, 0xa6, 0x83);
}
+#if 0
+struct cbmem_entry *get_cbmem_toc(void) {
+ return (struct cbmem_entry *) inl(K8T890_NVRAM_IO_BASE+K8T890_NVRAM_CBMEM_TOC);
+}
+#endif
+void set_cbmem_toc(struct cbmem_entry *toc) {
+ outl((u32) toc, K8T890_NVRAM_IO_BASE+K8T890_NVRAM_CBMEM_TOC);
+}
static const struct device_operations host_ctrl_ops_t = {
.read_resources = pci_dev_read_resources,
Index: src/include/cbmem.h
===================================================================
--- src/include/cbmem.h.orig 2010-11-14 14:45:09.000000000 +0100
+++ src/include/cbmem.h 2010-11-21 17:39:22.000000000 +0100
@@ -24,7 +24,7 @@
#define HIGH_MEMORY_TABLES ( 64 * 1024 )
#if CONFIG_HAVE_ACPI_RESUME
-#define HIGH_MEMORY_SIZE ( 1024 * 1024 )
+#define HIGH_MEMORY_SIZE ((CONFIG_RAMTOP - CONFIG_RAMBASE) + HIGH_MEMORY_TABLES)
#define HIGH_MEMORY_SAVE ( HIGH_MEMORY_SIZE - HIGH_MEMORY_TABLES )
#else
#define HIGH_MEMORY_SIZE HIGH_MEMORY_TABLES
@@ -48,4 +48,6 @@
void cbmem_list(void);
void cbmem_arch_init(void);
+struct cbmem_entry *get_cbmem_toc(void);
+void set_cbmem_toc(struct cbmem_entry *);
#endif
Index: src/cpu/amd/car/post_cache_as_ram.c
===================================================================
--- src/cpu/amd/car/post_cache_as_ram.c.orig 2010-11-14 14:45:10.000000000 +0100
+++ src/cpu/amd/car/post_cache_as_ram.c 2010-11-21 18:00:31.000000000 +0100
@@ -27,6 +27,45 @@
: "0" (bytes / 4), "g" (bytes), "1" ((long)dest), "2" ((long)src)
: "memory", "cc");
}
+
+#if CONFIG_HAVE_ACPI_RESUME == 1
+
+static inline void *backup_resume(void) {
+ unsigned long high_ram_base;
+ void *resume_backup_memory;
+ int suspend = acpi_is_wakeup_early();
+
+ if (!suspend)
+ return NULL;
+
+ /* Start address of high memory tables */
+ high_ram_base = (u32) get_cbmem_toc();
+
+ print_debug_pcar("CBMEM TOC is at: ", (uint32_t)high_ram_base);
+ print_debug_pcar("CBMEM TOC 0-size: ",(uint32_t)(high_ram_base + HIGH_MEMORY_SIZE + 4096));
+
+ cbmem_reinit((u64)high_ram_base);
+
+ resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
+
+ /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
+ * through stage 2. We could keep stuff like stack and heap in high tables
+ * memory completely, but that's a wonderful clean up task for another
+ * day.
+ */
+
+ if (resume_backup_memory) {
+ print_debug_pcar("Will copy coreboot region to: ", (uint32_t) resume_backup_memory);
+ /* copy only backup only memory used for CAR */
+ memcopy(resume_backup_memory+HIGH_MEMORY_SAVE-CONFIG_DCACHE_RAM_SIZE,
+ (void *)((CONFIG_RAMTOP)-CONFIG_DCACHE_RAM_SIZE),
+ CONFIG_DCACHE_RAM_SIZE); //inline
+ }
+
+ return resume_backup_memory;
+}
+#endif
+
/* Disable Erratum 343 Workaround, see RevGuide for Fam10h, Pub#41322 Rev 3.33 */
static void vErrata343(void)
@@ -43,7 +82,9 @@
static void post_cache_as_ram(void)
{
-
+#if CONFIG_HAVE_ACPI_RESUME == 1
+ void *resume_backup_memory;
+#endif
#if 1
{
/* Check value of esp to verify if we have enough rom for stack in Cache as RAM */
@@ -66,17 +107,16 @@
#error "You need to set CONFIG_RAMTOP greater than 1M"
#endif
- /* So we can access RAM from [1M, CONFIG_RAMTOP) */
- set_var_mtrr(0, 0x00000000, CONFIG_RAMTOP, MTRR_TYPE_WRBACK);
+#if CONFIG_HAVE_ACPI_RESUME == 1
+ resume_backup_memory = backup_resume();
+#endif
-// dump_mem(CONFIG_DCACHE_RAM_BASE+CONFIG_DCACHE_RAM_SIZE-0x8000, CONFIG_DCACHE_RAM_BASE+CONFIG_DCACHE_RAM_SIZE-0x7c00);
print_debug("Copying data from cache to RAM -- switching to use RAM as stack... ");
/* from here don't store more data in CAR */
vErrata343();
memcopy((void *)((CONFIG_RAMTOP)-CONFIG_DCACHE_RAM_SIZE), (void *)CONFIG_DCACHE_RAM_BASE, CONFIG_DCACHE_RAM_SIZE); //inline
-// dump_mem((CONFIG_RAMTOP) - 0x8000, (CONFIG_RAMTOP) - 0x7c00);
__asm__ volatile (
/* set new esp */ /* before CONFIG_RAMBASE */
@@ -94,9 +134,25 @@
print_debug_pcar("testx = ", testx);
print_debug("Disabling cache as ram now \n");
+
disable_cache_as_ram_bsp();
+ disable_cache();
+ set_var_mtrr(0, 0x00000000, CONFIG_RAMTOP, MTRR_TYPE_WRBACK);
+ enable_cache();
+
+#if CONFIG_HAVE_ACPI_RESUME == 1
+ /* now copy the rest of the area, using the WB method because we already
+ run normal RAM */
+ if (resume_backup_memory) {
+ memcopy(resume_backup_memory,
+ (void *)(CONFIG_RAMBASE),
+ (CONFIG_RAMTOP) - CONFIG_RAMBASE - CONFIG_DCACHE_RAM_SIZE);
+ }
+#endif
+
print_debug("Clearing initial memory region: ");
+
#if CONFIG_HAVE_ACPI_RESUME == 1
/* clear only coreboot used region of memory. Note: this may break ECC enabled boards */
memset((void*) CONFIG_RAMBASE, 0, (CONFIG_RAMTOP) - CONFIG_RAMBASE - CONFIG_DCACHE_RAM_SIZE);
@@ -105,8 +161,6 @@
#endif
print_debug("Done\n");
-// dump_mem((CONFIG_RAMTOP) - 0x8000, (CONFIG_RAMTOP) - 0x7c00);
-
set_sysinfo_in_ram(1); // So other core0 could start to train mem
#if CONFIG_MEM_TRAIN_SEQ == 1
Index: src/mainboard/asus/m2v-mx_se/Kconfig
===================================================================
--- src/mainboard/asus/m2v-mx_se/Kconfig.orig 2010-11-21 13:04:07.000000000 +0100
+++ src/mainboard/asus/m2v-mx_se/Kconfig 2010-11-21 13:18:25.000000000 +0100
@@ -35,6 +35,7 @@
select RAMINIT_SYSINFO
select VGA
select TINY_BOOTBLOCK
+ select HAVE_ACPI_RESUME
select HAVE_MAINBOARD_RESOURCES
select QRANK_DIMM_SUPPORT
select SET_FIDVID
Index: src/mainboard/asus/m2v-mx_se/romstage.c
===================================================================
--- src/mainboard/asus/m2v-mx_se/romstage.c.orig 2010-11-21 13:02:32.000000000 +0100
+++ src/mainboard/asus/m2v-mx_se/romstage.c 2010-11-21 17:57:04.000000000 +0100
@@ -67,7 +67,6 @@
{
}
-// defines S3_NVRAM_EARLY:
#include "southbridge/via/k8t890/k8t890_early_car.c"
#include "northbridge/amd/amdk8/amdk8.h"
@@ -83,6 +82,15 @@
#define SB_VFSMAF 0
+
+// Now, this needs to be included because it relies on the symbol
+// __PRE_RAM__ being set during CAR stage (in order to compile the
+// BSS free versions of the functions). Either rewrite the code
+// to be always BSS free, or invent a flag that's better suited than
+// __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
+//
+#include "lib/cbmem.c"
+
/* this function might fail on some K8 CPUs with errata #181 */
static void ldtstop_sb(void)
{
Index: src/mainboard/asus/m2v-mx_se/mainboard.c
===================================================================
--- src/mainboard/asus/m2v-mx_se/mainboard.c.orig 2010-11-17 12:15:57.000000000 +0100
+++ src/mainboard/asus/m2v-mx_se/mainboard.c 2010-11-22 00:21:01.000000000 +0100
@@ -34,13 +34,6 @@
lb_add_memory_range(mem, LB_MEM_RESERVED,
uma_memory_base, uma_memory_size);
#endif
-
-#if CONFIG_HAVE_ACPI_RESUME == 1
- lb_add_memory_range(mem, LB_MEM_RESERVED,
- CONFIG_RAMBASE, ((CONFIG_RAMTOP) - CONFIG_RAMBASE));
- lb_add_memory_range(mem, LB_MEM_RESERVED,
- CONFIG_DCACHE_RAM_BASE, CONFIG_DCACHE_RAM_SIZE);
-#endif
return 0;
}
Index: src/lib/cbmem.c
===================================================================
--- src/lib/cbmem.c.orig 2010-11-14 14:45:09.000000000 +0100
+++ src/lib/cbmem.c 2010-11-22 00:04:06.000000000 +0100
@@ -36,11 +36,32 @@
u64 size;
} __attribute__((packed));
-#ifndef __PRE_RAM__
-struct cbmem_entry *bss_cbmem_toc;
-#define get_cbmem_toc() bss_cbmem_toc
+
+#ifdef __PRE_RAM__
+
+/* note this should be done as weak function but we do #include
+ of C files in the romstage breaking this (in same compile
+ unit is weak and non weak function
+struct cbmem_entry *__attribute__((weak)) get_cbmem_toc(void)
+*/
+#ifndef get_cbmem_toc
+ #define get_cbmem_toc() (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE)
+#endif
+
#else
-#define get_cbmem_toc() (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE)
+
+static struct cbmem_entry *bss_cbmem_toc;
+
+struct cbmem_entry *__attribute__((weak)) get_cbmem_toc(void)
+{
+ return bss_cbmem_toc;
+}
+
+void __attribute__((weak)) set_cbmem_toc(struct cbmem_entry * x)
+{
+ /* do nothing, this should be called by chipset to save TOC in NVRAM */
+}
+
#endif
/**
@@ -70,6 +91,10 @@
for (;;) ;
}
+ /* we don't need to call this in romstage, usefull only from ramstage */
+#ifndef __PRE_RAM__
+ set_cbmem_toc((struct cbmem_entry *)(unsigned long)baseaddr);
+#endif
memset(cbmem_toc, 0, CBMEM_TOC_RESERVED);
cbmem_toc[0] = (struct cbmem_entry) {
Index: src/northbridge/amd/amdk8/northbridge.c
===================================================================
--- src/northbridge/amd/amdk8/northbridge.c.orig 2010-11-21 13:02:36.000000000 +0100
+++ src/northbridge/amd/amdk8/northbridge.c 2010-11-22 00:07:32.000000000 +0100
@@ -822,7 +822,8 @@
#endif
#if CONFIG_WRITE_HIGH_TABLES==1
-#define HIGH_TABLES_SIZE 64 /* maximum size of high tables in KB */
+#include <cbmem.h>
+#define HIGH_TABLES_SIZE ((HIGH_MEMORY_SIZE + 1024) / 1024)
extern uint64_t high_tables_base, high_tables_size;
#endif
Index: src/arch/i386/boot/tables.c
===================================================================
--- src/arch/i386/boot/tables.c.orig 2010-11-14 14:45:36.000000000 +0100
+++ src/arch/i386/boot/tables.c 2010-11-21 13:18:25.000000000 +0100
@@ -214,7 +214,7 @@
* it begin there during reboot time. We don't need the pointer, nor
* the result right now. If it fails, ACPI resume will be disabled.
*/
- cbmem_add(CBMEM_ID_RESUME, 1024 * (1024-64));
+ cbmem_add(CBMEM_ID_RESUME, HIGH_MEMORY_SAVE);
#endif
#if CONFIG_MULTIBOOT
Index: src/arch/i386/boot/acpi.c
===================================================================
--- src/arch/i386/boot/acpi.c.orig 2010-11-21 17:52:50.000000000 +0100
+++ src/arch/i386/boot/acpi.c 2010-11-21 17:52:59.000000000 +0100
@@ -470,17 +470,6 @@
{
void *wake_vec;
-#if 0
-#if CONFIG_MEM_TRAIN_SEQ != 0
- #error "So far it works on AMD and CONFIG_MEM_TRAIN_SEQ == 0"
-#endif
-
-#if CONFIG_RAMBASE < 0x1F00000
- #error "For ACPI RESUME you need to have CONFIG_RAMBASE at least 31MB"
- #error "Chipset support (S3_NVRAM_EARLY and ACPI_IS_WAKEUP_EARLY functions and memory ctrl)"
- #error "And coreboot memory reserved in mainboard.c"
-#endif
-#endif
/* If we happen to be resuming find wakeup vector and jump to OS. */
wake_vec = acpi_find_wakeup_vector();
if (wake_vec)
Index: src/mainboard/asus/a8v-e_deluxe/romstage.c
===================================================================
--- src/mainboard/asus/a8v-e_deluxe/romstage.c.orig 2010-11-21 17:55:02.000000000 +0100
+++ src/mainboard/asus/a8v-e_deluxe/romstage.c 2010-11-21 17:55:04.000000000 +0100
@@ -84,7 +84,6 @@
}
}
-// defines S3_NVRAM_EARLY:
#include "southbridge/via/k8t890/k8t890_early_car.c"
#include "northbridge/amd/amdk8/amdk8.h"
Index: src/mainboard/asus/a8v-e_se/romstage.c
===================================================================
--- src/mainboard/asus/a8v-e_se/romstage.c.orig 2010-11-21 17:55:14.000000000 +0100
+++ src/mainboard/asus/a8v-e_se/romstage.c 2010-11-21 17:55:17.000000000 +0100
@@ -84,7 +84,6 @@
}
}
-// defines S3_NVRAM_EARLY:
#include "southbridge/via/k8t890/k8t890_early_car.c"
#include "northbridge/amd/amdk8/amdk8.h"
Index: src/mainboard/asus/m2v/romstage.c
===================================================================
--- src/mainboard/asus/m2v/romstage.c.orig 2010-11-21 17:54:36.000000000 +0100
+++ src/mainboard/asus/m2v/romstage.c 2010-11-21 17:54:38.000000000 +0100
@@ -69,7 +69,6 @@
{
}
-// defines S3_NVRAM_EARLY:
#include "southbridge/via/k8t890/k8t890_early_car.c"
#include "northbridge/amd/amdk8/amdk8.h"
Index: src/northbridge/amd/amdk8/raminit_f_dqs.c
===================================================================
--- src/northbridge/amd/amdk8/raminit_f_dqs.c.orig 2010-11-21 17:52:19.000000000 +0100
+++ src/northbridge/amd/amdk8/raminit_f_dqs.c 2010-11-22 00:00:32.000000000 +0100
@@ -1826,25 +1826,7 @@
set_htic_bit(0, val, 9);
}
-#ifdef S3_NVRAM_EARLY
-// Don't define these prototypes as the real functions are already included
-// at this point.
-//
-//int s3_save_nvram_early(u32 dword, int size, int nvram_pos);
-//int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos);
-#else
-static inline int s3_save_nvram_early(u32 dword, int size, int nvram_pos)
-{
- return nvram_pos;
-}
-
-static inline int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos)
-{
- die("No memory NVRAM loader for DQS data! Unable to restore memory state\n");
-
- return nvram_pos; /* Make GCC happy */
-}
-#endif
+#if CONFIG_HAVE_ACPI_RESUME == 1
#if CONFIG_MEM_TRAIN_SEQ == 0
static int save_index_to_pos(unsigned int dev, int size, int index, int nvram_pos)
@@ -1930,6 +1912,7 @@
reg |= pci_read_config32(dev, DRAM_CONFIG_HIGH);
pci_write_config32(dev, DRAM_CONFIG_HIGH, reg);
}
+#endif
#if CONFIG_MEM_TRAIN_SEQ == 0
#if K8_REV_F_SUPPORT_F0_F1_WORKAROUND == 1
@@ -1998,7 +1981,9 @@
if(train_DqsRcvrEn(ctrl+i, 2, sysinfo)) goto out;
printk(BIOS_DEBUG, " done\n");
sysinfo->mem_trained[i]=1;
+#if CONFIG_HAVE_ACPI_RESUME == 1
dqs_save_MC_NVRAM((ctrl+i)->f2);
+#endif
}
out:
Index: src/northbridge/amd/amdk8/raminit_f.c
===================================================================
--- src/northbridge/amd/amdk8/raminit_f.c.orig 2010-11-21 23:58:57.000000000 +0100
+++ src/northbridge/amd/amdk8/raminit_f.c 2010-11-21 23:59:44.000000000 +0100
@@ -2988,14 +2988,15 @@
}
#endif
-
+#if CONFIG_HAVE_ACPI_RESUME == 1
#include "exit_from_self.c"
+#endif
static void sdram_enable(int controllers, const struct mem_controller *ctrl,
struct sys_info *sysinfo)
{
int i;
-#ifdef ACPI_IS_WAKEUP_EARLY
+#if CONFIG_HAVE_ACPI_RESUME == 1
int suspend = acpi_is_wakeup_early();
#else
int suspend = 0;
--
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