Configure SPI flash devices into SPL. Add SPI boot option to spl.c.
Document how to format flash for booting.
Signed-off-by: Thomas Skibo <thomas-...@skibo.net>
---
.../dts/hifive-unmatched-a00-u-boot.dtsi | 11 +++++++
board/sifive/unmatched/spl.c | 3 ++
configs/sifive_unmatched_defconfig | 6 ++++
doc/board/sifive/unmatched.rst | 31 +++++++++++++++++++
4 files changed, 51 insertions(+)
diff --git a/arch/riscv/dts/hifive-unmatched-a00-u-boot.dtsi
b/arch/riscv/dts/hifive-unmatched-a00-u-boot.dtsi
index c5475aa149..1ee8ab1868 100644
--- a/arch/riscv/dts/hifive-unmatched-a00-u-boot.dtsi
+++ b/arch/riscv/dts/hifive-unmatched-a00-u-boot.dtsi
@@ -16,6 +16,10 @@
u-boot,dm-spl;
};
+ config {
+ u-boot,spl-payload-offset = <0x105000>; /* loader2 @1044KB */
+ };
+
hfclk {
u-boot,dm-spl;
};
@@ -30,6 +34,13 @@
clocks = <&rtcclk>;
};
+&qspi0 {
+ u-boot,dm-spl;
+ flash@0 {
+ u-boot,dm-spl;
+ };
+};
+
&spi0 {
mmc@0 {
u-boot,dm-spl;
diff --git a/board/sifive/unmatched/spl.c b/board/sifive/unmatched/spl.c
index d5663274cd..7c0beedc08 100644
--- a/board/sifive/unmatched/spl.c
+++ b/board/sifive/unmatched/spl.c
@@ -22,6 +22,7 @@
#define GEM_PHY_RESET SIFIVE_GENERIC_GPIO_NR(0, 12)
#define MODE_SELECT_REG 0x1000
+#define MODE_SELECT_SPI 0x6
#define MODE_SELECT_SD 0xb
#define MODE_SELECT_MASK GENMASK(3, 0)
@@ -123,6 +124,8 @@ u32 spl_boot_device(void)
u32 boot_device = mode_select & MODE_SELECT_MASK;
switch (boot_device) {
+ case MODE_SELECT_SPI:
+ return BOOT_DEVICE_SPI;
case MODE_SELECT_SD:
return BOOT_DEVICE_MMC1;
default:
diff --git a/configs/sifive_unmatched_defconfig
b/configs/sifive_unmatched_defconfig
index 9cc18b029c..d400ed0b23 100644
--- a/configs/sifive_unmatched_defconfig
+++ b/configs/sifive_unmatched_defconfig
@@ -8,6 +8,7 @@ CONFIG_SPL_DM_SPI=y
CONFIG_DEFAULT_DEVICE_TREE="hifive-unmatched-a00"
CONFIG_SPL_MMC=y
CONFIG_SPL=y
+CONFIG_SPL_SPI_FLASH_SUPPORT=y
CONFIG_SPL_SPI=y
CONFIG_AHCI=y
CONFIG_TARGET_SIFIVE_UNMATCHED=y
@@ -23,17 +24,22 @@ CONFIG_DISPLAY_BOARDINFO=y
CONFIG_DISPLAY_BOARDINFO_LATE=y
CONFIG_ID_EEPROM=y
CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SPL_DM_SPI_FLASH=y
CONFIG_SPL_DM_RESET=y
+CONFIG_SPL_SPI_LOAD=y
CONFIG_CMD_EEPROM=y
CONFIG_CMD_MEMINFO=y
CONFIG_CMD_PWM=y
CONFIG_CMD_GPT_RENAME=y
CONFIG_CMD_PCI=y
CONFIG_CMD_USB=y
+CONFIG_USE_ENV_SPI_BUS=y
+CONFIG_ENV_SPI_BUS=1
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_SCSI_AHCI=y
CONFIG_AHCI_PCI=y
CONFIG_SPL_CLK=y
+CONFIG_SPI_FLASH_ISSI=y
CONFIG_SYS_I2C_EEPROM_ADDR=0x54
CONFIG_E1000=y
CONFIG_NVME=y
diff --git a/doc/board/sifive/unmatched.rst b/doc/board/sifive/unmatched.rst
index 6b024f07f6..b52a1f690c 100644
--- a/doc/board/sifive/unmatched.rst
+++ b/doc/board/sifive/unmatched.rst
@@ -534,3 +534,34 @@ Sample boot log from HiFive Unmatched board
OpenEmbedded nodistro.0 unmatched ttySIF0
unmatched login:
+
+
+Booting from SPI
+----------------
+
+Use Building steps from "Booting from uSD using U-Boot SPL" section.
+
+Partition the SPI in Linux via mtdblock. The partition types here are
+"HiFive Unleashed FSBL", "HiFive Unleashed BBL", and "U-Boot environment"
+for partitions one through three respectively.
+
+.. code-block:: none
+
+ sgdisk --clear -a 1 \
+ --new=1:40:2087 --change-name=1:spl
--typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \
+ --new=2:2088:10279 --change-name=2:uboot
--typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \
+ --new=3:10280:10535 --change-name=3:env
--typecode=3:3DE21764-95BD-54BD-A5C3-4ABE786F38A8 \
+ /dev/mtdblock0
+
+Write U-boot SPL and U-boot to their partitions.
+
+.. code-block:: none
+
+ dd if=u-boot-spl.bin of=/dev/mtdblock0 bs=4096 seek=5 conv=sync
+ dd if=u-boot.itb of=/dev/mtdblock0 bs=4096 seek=261 conv=sync
+
+Power off the board.
+
+Change DIP switches MSEL[3:0] to 0110.
+
+Power up the board.
--
2.25.1
