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authorMichał Żygowski <michal.zygowski@3mdeb.com>2019-11-24 16:32:05 +0100
committerKyösti Mälkki <kyosti.malkki@gmail.com>2019-12-11 22:47:10 +0000
commit1b12b64dab57151d1f04d13d09c1afbf16a7485f (patch)
treea912c3447ddc7528fa320d8c254c8b403e79cb55 /src/drivers
parentb643d3df8adbc933e02d8c8c7dcc61cc60b65afb (diff)
downloadcoreboot-1b12b64dab57151d1f04d13d09c1afbf16a7485f.tar.xz
AGESA, binaryPI: implement C bootblock
Modify CAR setup to work in bootblock. Provide bootblock C file with necessary C bootblock functions. Additionally chache the ROM and set the MMCONF base before jumping to bootblock main. Change-Id: I29916a96f490ff717c69dc7cd565d74a83dbfb0d Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com> Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36914 Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/drivers')
-rw-r--r--src/drivers/amd/agesa/Makefile.inc6
-rw-r--r--src/drivers/amd/agesa/bootblock.c47
-rw-r--r--src/drivers/amd/agesa/cache_as_ram.S14
-rw-r--r--src/drivers/amd/agesa/romstage.c27
4 files changed, 89 insertions, 5 deletions
diff --git a/src/drivers/amd/agesa/Makefile.inc b/src/drivers/amd/agesa/Makefile.inc
index dfb385da80..3c3c4fc621 100644
--- a/src/drivers/amd/agesa/Makefile.inc
+++ b/src/drivers/amd/agesa/Makefile.inc
@@ -19,7 +19,13 @@ romstage-y += state_machine.c
ramstage-y += state_machine.c
+ifneq ($(CONFIG_ROMCC_BOOTBLOCK),y)
+bootblock-y += bootblock.c
+bootblock-y += cache_as_ram.S
+else
cpu_incs-y += $(src)/drivers/amd/agesa/cache_as_ram.S
+endif
+
postcar-y += exit_car.S
romstage-y += def_callouts.c
diff --git a/src/drivers/amd/agesa/bootblock.c b/src/drivers/amd/agesa/bootblock.c
new file mode 100644
index 0000000000..3763b98a3a
--- /dev/null
+++ b/src/drivers/amd/agesa/bootblock.c
@@ -0,0 +1,47 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <bootblock_common.h>
+#include <halt.h>
+#include <timestamp.h>
+#include <amdblocks/amd_pci_mmconf.h>
+#include <amdblocks/biosram.h>
+#include <cpu/amd/msr.h>
+#include <cpu/x86/mtrr.h>
+
+#define EARLY_VMTRR_FLASH 6
+
+static void set_early_mtrrs(void)
+{
+ /* Cache the ROM to speed up booting */
+ set_var_mtrr(EARLY_VMTRR_FLASH, OPTIMAL_CACHE_ROM_BASE,
+ OPTIMAL_CACHE_ROM_SIZE, MTRR_TYPE_WRPROT);
+}
+
+asmlinkage void bootblock_c_entry(uint64_t base_timestamp)
+{
+ enable_pci_mmconf();
+ set_early_mtrrs();
+
+ bootblock_main_with_basetime(base_timestamp);
+}
+
+asmlinkage void ap_bootblock_c_entry(void)
+{
+ enable_pci_mmconf();
+ set_early_mtrrs();
+
+ void (*ap_romstage_entry)(void) = get_ap_entry_ptr();
+ ap_romstage_entry(); /* execution does not return */
+ halt();
+}
diff --git a/src/drivers/amd/agesa/cache_as_ram.S b/src/drivers/amd/agesa/cache_as_ram.S
index 4417e64595..1034992e17 100644
--- a/src/drivers/amd/agesa/cache_as_ram.S
+++ b/src/drivers/amd/agesa/cache_as_ram.S
@@ -27,9 +27,17 @@
.code32
.globl _cache_as_ram_setup, _cache_as_ram_setup_end
+.global bootblock_pre_c_entry
_cache_as_ram_setup:
+/*
+ * on entry:
+ * mm0: BIST (ignored)
+ * mm2_mm1: timestamp at bootblock_protected_mode_entry
+ */
+bootblock_pre_c_entry:
+
post_code(0xa0)
AMD_ENABLE_STACK
@@ -51,8 +59,10 @@ _cache_as_ram_setup:
and $0xfffffff0, %esp
sub $8, %esp
- pushl $0 /* tsc[63:32] */
- pushl $0 /* tsc[31:0] */
+ movd %mm2, %eax
+ pushl %eax /* tsc[63:32] */
+ movd %mm1, %eax
+ pushl %eax /* tsc[31:0] */
post_code(0xa2)
diff --git a/src/drivers/amd/agesa/romstage.c b/src/drivers/amd/agesa/romstage.c
index 48a81c57df..dbf8bd6070 100644
--- a/src/drivers/amd/agesa/romstage.c
+++ b/src/drivers/amd/agesa/romstage.c
@@ -11,6 +11,7 @@
* GNU General Public License for more details.
*/
+#include <amdblocks/biosram.h>
#include <arch/acpi.h>
#include <arch/cpu.h>
#include <arch/romstage.h>
@@ -26,6 +27,8 @@
#include <northbridge/amd/agesa/agesa_helper.h>
#include <northbridge/amd/agesa/state_machine.h>
+void __weak board_BeforeAgesa(struct sysinfo *cb) { }
+
void __weak platform_once(struct sysinfo *cb)
{
board_BeforeAgesa(cb);
@@ -39,6 +42,11 @@ static void fill_sysinfo(struct sysinfo *cb)
agesa_set_interface(cb);
}
+/* APs will enter directly here from bootblock, bypassing verstage
+ * and potential fallback / normal bootflow detection.
+ */
+static void ap_romstage_main(void);
+
static void romstage_main(void)
{
struct postcar_frame pcf;
@@ -48,13 +56,15 @@ static void romstage_main(void)
int cbmem_initted = 0;
/* Enable PCI MMIO configuration. */
- amd_initmmio();
+ if (CONFIG(ROMCC_BOOTBLOCK))
+ amd_initmmio();
fill_sysinfo(cb);
if (initial_apic_id == 0) {
- timestamp_init(timestamp_get());
+ if (CONFIG(ROMCC_BOOTBLOCK))
+ timestamp_init(timestamp_get());
timestamp_add_now(TS_START_ROMSTAGE);
platform_once(cb);
@@ -65,6 +75,9 @@ static void romstage_main(void)
printk(BIOS_DEBUG, "APIC %02d: CPU Family_Model = %08x\n",
initial_apic_id, cpuid_eax(1));
+ if (!CONFIG(ROMCC_BOOTBLOCK))
+ set_ap_entry_ptr(ap_romstage_main);
+
agesa_execute_state(cb, AMD_INIT_RESET);
agesa_execute_state(cb, AMD_INIT_EARLY);
@@ -105,7 +118,8 @@ static void ap_romstage_main(void)
struct sysinfo *cb = &romstage_state;
/* Enable PCI MMIO configuration. */
- amd_initmmio();
+ if (CONFIG(ROMCC_BOOTBLOCK))
+ amd_initmmio();
fill_sysinfo(cb);
@@ -117,6 +131,7 @@ static void ap_romstage_main(void)
halt();
}
+#if CONFIG(ROMCC_BOOTBLOCK)
/* This wrapper enables easy transition away from ROMCC_BOOTBLOCK
* keeping changes in cache_as_ram.S easy to manage.
*/
@@ -129,3 +144,9 @@ asmlinkage void ap_bootblock_c_entry(void)
{
ap_romstage_main();
}
+#else
+asmlinkage void car_stage_entry(void)
+{
+ romstage_main();
+}
+#endif