x86: coreboot: Add IDE and SATA

Add these options to permit access to more disk types.

Add some documentation as well.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

configs/coreboot64_defconfig

@@ -25,6 +25,7 @@ CONFIG_SYS_PBSIZE=532
 CONFIG_CMD_IDE=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_PART=y
+CONFIG_CMD_SATA=y
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y

configs/coreboot_defconfig

@@ -21,8 +21,10 @@ CONFIG_LOGF_LINE=y
 CONFIG_LOGF_FUNC=y
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_PCI_INIT_R=y
+CONFIG_CMD_IDE=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_PART=y
+CONFIG_CMD_SATA=y
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y
@@ -47,6 +49,13 @@ CONFIG_USE_ROOTPATH=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 # CONFIG_ACPIGEN is not set
+CONFIG_SYS_IDE_MAXDEVICE=4
+CONFIG_SYS_ATA_DATA_OFFSET=0
+CONFIG_SYS_ATA_REG_OFFSET=0
+CONFIG_SYS_ATA_ALT_OFFSET=0
+CONFIG_ATAPI=y
+CONFIG_LBA48=y
+CONFIG_SYS_64BIT_LBA=y
 CONFIG_NVME_PCI=y
 # CONFIG_PCI_PNP is not set
 CONFIG_SOUND=y

doc/board/coreboot/coreboot.rst

@@ -41,6 +41,26 @@ At present it seems that for Minnowboard Max, coreboot does not pass through
 the video information correctly (it always says the resolution is 0x0). This
 works correctly for link though.
 
+You can run via QEMU using::
+
+  qemu-system-x86_64 -bios build/coreboot.rom -serial mon:stdio
+
+The `-serial mon:stdio` part shows both output in the display and on the
+console. It is optional. You can add `nographic` as well to *only* get console
+output.
+
+To run with a SATA drive called `$DISK`::
+
+  qemu-system-x86_64 -bios build/coreboot.rom -serial mon:stdio \
+	-drive id=disk,file=$DISK,if=none \
+	-device ahci,id=ahci \
+	-device ide-hd,drive=disk,bus=ahci.0
+
+Then you can scan it with `scsi scan` and access it normally.
+
+To use 4GB of memory, typically necessary for booting Linux distros, add
+`-m 4GB`.
+
 64-bit U-Boot
 -------------