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authorDuncan Laurie <dlaurie@google.com>2020-03-17 18:54:39 -0700
committerPatrick Georgi <pgeorgi@google.com>2020-03-31 10:47:26 +0000
commit14cf3245fe0a3ff362712527492328a9fe055c6f (patch)
treecc7cc1bf14d2b69948103656071bea3ddeaa1f53 /src
parent516967c681a1cadfb053d8f4c098826eca743131 (diff)
downloadcoreboot-14cf3245fe0a3ff362712527492328a9fe055c6f.tar.xz
mb/emulation/qemu-q35: Enable CHROMEOS as an option
Allow Chrome OS to be enabled for this QEMU target. By default this does not change anything unless it is selected in the build configuration, but it makes it possible. Native VGA init is not forced when Chrome OS is enabled because the drm-bochs driver does not work with chrome (even the latest upstream kernel driver with drm atomic support) but it does work with virtio. The coreboot graphics init needs to match what is selected with qemu (with -vga std or -vga virtio) which in turn will determine which kernel driver is used. A second FMAP is added with both RW-A and RW-B regions which is required by chromeos. Recovery mode can be entered by supplying a custom fw_cfg option when launching qemu: -fw_cfg name=opt/cros/recovery,string=1 Change-Id: I24b4532ea961e68558663292c99d121f0a30ce3b Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39837 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src')
-rw-r--r--src/mainboard/emulation/qemu-q35/Kconfig8
-rw-r--r--src/mainboard/emulation/qemu-q35/Makefile.inc4
-rw-r--r--src/mainboard/emulation/qemu-q35/chromeos.c58
-rw-r--r--src/mainboard/emulation/qemu-q35/vboot-rwab-16M.fmd28
4 files changed, 95 insertions, 3 deletions
diff --git a/src/mainboard/emulation/qemu-q35/Kconfig b/src/mainboard/emulation/qemu-q35/Kconfig
index ee6406049c..31aa3d8723 100644
--- a/src/mainboard/emulation/qemu-q35/Kconfig
+++ b/src/mainboard/emulation/qemu-q35/Kconfig
@@ -11,15 +11,16 @@ config BOARD_SPECIFIC_OPTIONS
select BOARD_ROMSIZE_KB_2048 if !VBOOT
select BOARD_ROMSIZE_KB_16384 if VBOOT
select MAINBOARD_HAS_NATIVE_VGA_INIT
- select MAINBOARD_FORCE_NATIVE_VGA_INIT
+ select MAINBOARD_FORCE_NATIVE_VGA_INIT if !CHROMEOS
select MAINBOARD_HAS_LPC_TPM
+ select MAINBOARD_HAS_CHROMEOS
config VBOOT
select VBOOT_MUST_REQUEST_DISPLAY
select VBOOT_STARTS_IN_BOOTBLOCK
select VBOOT_SEPARATE_VERSTAGE
select VBOOT_VBNV_CMOS
- select VBOOT_NO_BOARD_SUPPORT
+ select VBOOT_NO_BOARD_SUPPORT if !CHROMEOS
select GBB_FLAG_DISABLE_LID_SHUTDOWN
select GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC
select GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC
@@ -27,7 +28,8 @@ config VBOOT
config FMDFILE
string
- default "src/mainboard/$(CONFIG_MAINBOARD_DIR)/vboot-rwa-16M.fmd" if VBOOT_SLOTS_RW_A
+ default "src/mainboard/$(CONFIG_MAINBOARD_DIR)/vboot-rwa-16M.fmd" if VBOOT_SLOTS_RW_A && !VBOOT_SLOTS_RW_AB
+ default "src/mainboard/$(CONFIG_MAINBOARD_DIR)/vboot-rwab-16M.fmd" if VBOOT_SLOTS_RW_AB
if VBOOT
diff --git a/src/mainboard/emulation/qemu-q35/Makefile.inc b/src/mainboard/emulation/qemu-q35/Makefile.inc
index 133a213cc6..e142d4d5c1 100644
--- a/src/mainboard/emulation/qemu-q35/Makefile.inc
+++ b/src/mainboard/emulation/qemu-q35/Makefile.inc
@@ -10,3 +10,7 @@ postcar-y += ../qemu-i440fx/exit_car.S
ramstage-y += ../qemu-i440fx/fw_cfg.c
ramstage-y += ../qemu-i440fx/memmap.c
ramstage-y += ../qemu-i440fx/northbridge.c
+
+verstage-$(CONFIG_CHROMEOS) += chromeos.c
+verstage-$(CONFIG_CHROMEOS) += ../qemu-i440fx/fw_cfg.c
+ramstage-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/emulation/qemu-q35/chromeos.c b/src/mainboard/emulation/qemu-q35/chromeos.c
new file mode 100644
index 0000000000..50e48caf98
--- /dev/null
+++ b/src/mainboard/emulation/qemu-q35/chromeos.c
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <boot/coreboot_tables.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+#include "../qemu-i440fx/fw_cfg.h"
+
+void fill_lb_gpios(struct lb_gpios *gpios)
+{
+ struct lb_gpio chromeos_gpios[] = {
+ {-1, ACTIVE_HIGH, 1, "lid"},
+ {-1, ACTIVE_HIGH, 0, "power"},
+ {-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
+ {-1, ACTIVE_HIGH, 0, "EC in RW"},
+ };
+ lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
+}
+
+int get_write_protect_state(void)
+{
+ return 0;
+}
+
+/*
+ * Enable recovery mode with fw_cfg option to qemu:
+ * -fw_cfg name=opt/cros/recovery,string=1
+ */
+int get_recovery_mode_switch(void)
+{
+ FWCfgFile f;
+
+ if (!fw_cfg_check_file(&f, "opt/cros/recovery")) {
+ uint8_t rec_mode;
+ if (f.size != 1) {
+ printk(BIOS_ERR, "opt/cros/recovery invalid size %d\n", f.size);
+ return 0;
+ }
+ fw_cfg_get(f.select, &rec_mode, f.size);
+ if (rec_mode == '1') {
+ printk(BIOS_INFO, "Recovery is enabled.\n");
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static const struct cros_gpio cros_gpios[] = {
+ CROS_GPIO_REC_AL(CROS_GPIO_VIRTUAL, "QEMU"),
+};
+
+void mainboard_chromeos_acpi_generate(void)
+{
+ chromeos_acpi_gpio_generate(cros_gpios, ARRAY_SIZE(cros_gpios));
+}
diff --git a/src/mainboard/emulation/qemu-q35/vboot-rwab-16M.fmd b/src/mainboard/emulation/qemu-q35/vboot-rwab-16M.fmd
new file mode 100644
index 0000000000..fcbfa95b69
--- /dev/null
+++ b/src/mainboard/emulation/qemu-q35/vboot-rwab-16M.fmd
@@ -0,0 +1,28 @@
+FLASH@0xff000000 0x1000000 {
+ SI_BIOS 0x1000000 {
+ RW_SECTION_A 0x1c0000 {
+ VBLOCK_A 0x10000
+ FW_MAIN_A(CBFS)
+ RW_FWID_A 0x40
+ }
+ RW_SECTION_B 0x1c0000 {
+ VBLOCK_B 0x10000
+ FW_MAIN_B(CBFS)
+ RW_FWID_B 0x40
+ }
+ RW_SHARED 0x4000 {
+ SHARED_DATA 0x2000
+ VBLOCK_DEV 0x2000
+ }
+ RW_VPD(PRESERVE) 0x1000
+ RW_LEGACY(CBFS) 0x10000
+ WP_RO {
+ FMAP 0x800
+ RO_FRID 0x40
+ RO_PADDING 0x7c0
+ RO_VPD(PRESERVE) 0x1000
+ GBB 0x1e000
+ COREBOOT(CBFS)
+ }
+ }
+}