new file mode 100644
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Sample device tree for qemu_arm
+
+ * Copyright 2021 Google LLC
+ */
+
+/ {
+ binman {
+ u-boot-spl {
+ size = <0x10000>;
+ };
+
+ u-boot {
+ };
+ };
+
+ pl011@9000000 {
+ u-boot,dm-spl;
+ };
+
+};
@@ -20,6 +20,15 @@ config TARGET_QEMU_ARM_32BIT
select CPU_V7A
select SYS_ARCH_TIMER
+config TARGET_QEMU_ARM_32BIT_SPL
+ bool "ARMv7-A, 32bit with SPL"
+ select ARCH_SUPPORT_PSCI
+ select BOARD_LATE_INIT
+ select CPU_V7A
+ select SYS_ARCH_TIMER
+ select SPL
+ select BINMAN
+
config TARGET_QEMU_ARM_64BIT
bool "ARMv8, 64bit"
select ARM64
@@ -1,12 +1,10 @@
-if TARGET_QEMU_ARM_32BIT || TARGET_QEMU_ARM_64BIT
-
-config SYS_TEXT_BASE
- default 0x00000000
+if ARCH_QEMU
config BOARD_SPECIFIC_OPTIONS # dummy
def_bool y
select CMD_QFW
select QFW_MMIO
+ select SUPPORT_SPL
imply VIRTIO_MMIO
imply VIRTIO_PCI
imply VIRTIO_NET
@@ -14,6 +12,13 @@ config BOARD_SPECIFIC_OPTIONS # dummy
endif
+if TARGET_QEMU_ARM_32BIT || TARGET_QEMU_ARM_64BIT
+
+config SYS_TEXT_BASE
+ default 0x00000000
+
+endif
+
if TARGET_QEMU_ARM_64BIT && !TFABOOT
config BOARD_SPECIFIC_OPTIONS
imply SYS_MTDPARTS_RUNTIME
@@ -21,3 +26,13 @@ config BOARD_SPECIFIC_OPTIONS
source "board/emulation/common/Kconfig"
endif
+
+if TARGET_QEMU_ARM_32BIT_SPL
+
+config SPL_TEXT_BASE
+ default 0x00000000
+
+config SYS_TEXT_BASE
+ default 0x00010000
+
+endif
@@ -4,4 +4,5 @@ S: Maintained
F: board/emulation/qemu-arm/
F: include/configs/qemu-arm.h
F: configs/qemu_arm_defconfig
+F: configs/qemu_arm_spl_defconfig
F: configs/qemu_arm64_defconfig
@@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0+
obj-y += qemu-arm.o
+obj-$(CONFIG_SPL_BUILD) += spl.o
new file mode 100644
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <spl.h>
+#include <asm/spl.h>
+
+u32 spl_boot_device(void)
+{
+ return BOOT_DEVICE_BOARD;
+}
+
+static int spl_qemu_load_image(struct spl_image_info *spl_image,
+ struct spl_boot_device *bootdev)
+{
+ spl_image->name = "U-Boot";
+ spl_image->load_addr = spl_get_image_pos();
+ spl_image->entry_point = spl_get_image_pos();
+ flush_cache(spl_image->load_addr, spl_get_image_size());
+
+ return 0;
+}
+SPL_LOAD_IMAGE_METHOD("QEMU", 0, BOOT_DEVICE_BOARD, spl_qemu_load_image);
new file mode 100644
@@ -0,0 +1,72 @@
+CONFIG_ARM=y
+CONFIG_SYS_ICACHE_OFF=y
+CONFIG_SYS_DCACHE_OFF=y
+CONFIG_ARM_SMCCC=y
+CONFIG_ARCH_QEMU=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_ENV_SIZE=0x40000
+CONFIG_ENV_SECT_SIZE=0x40000
+CONFIG_SYS_MALLOC_LEN=0x1000000
+CONFIG_DEFAULT_DEVICE_TREE="qemu-arm"
+CONFIG_TARGET_QEMU_ARM_32BIT_SPL=y
+CONFIG_SPL_SERIAL=y
+CONFIG_DEBUG_UART_BASE=0x9000000
+CONFIG_DEBUG_UART_CLOCK=0
+CONFIG_ARMV7_LPAE=y
+CONFIG_DEBUG_UART=y
+CONFIG_AHCI=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_SYS_LOAD_ADDR=0x40200000
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_FIT_BEST_MATCH=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
+CONFIG_USE_PREBOOT=y
+# CONFIG_DISPLAY_CPUINFO is not set
+# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_PCI_INIT_R=y
+CONFIG_SPL_FRAMEWORK_BOARD_INIT_F=y
+CONFIG_CMD_BOOTEFI_SELFTEST=y
+CONFIG_CMD_NVEDIT_EFI=y
+CONFIG_CMD_DFU=y
+CONFIG_CMD_MTD=y
+CONFIG_CMD_PCI=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_OF_BOARD=y
+CONFIG_ENV_IS_IN_FLASH=y
+CONFIG_ENV_ADDR=0x4000000
+CONFIG_SPL_DM=y
+CONFIG_SCSI_AHCI=y
+CONFIG_AHCI_PCI=y
+CONFIG_DFU_TFTP=y
+CONFIG_DFU_MTD=y
+CONFIG_DFU_RAM=y
+# CONFIG_MMC is not set
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_CFI_FLASH=y
+CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
+CONFIG_FLASH_CFI_MTD=y
+CONFIG_SYS_FLASH_CFI=y
+CONFIG_DM_ETH=y
+CONFIG_E1000=y
+CONFIG_NVME=y
+CONFIG_PCI=y
+CONFIG_PCIE_ECAM_GENERIC=y
+CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
+CONFIG_DEBUG_UART_PL011=y
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYSRESET=y
+CONFIG_SPL_SYSRESET=y
+CONFIG_SYSRESET_PSCI=y
+CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_PCI=y
+# CONFIG_BINMAN_FDT is not set
@@ -38,6 +38,11 @@ Set the CROSS_COMPILE environment variable as usual, and run:
make qemu_arm64_defconfig
make
+- for ARM with SPL::
+
+ make qemu_arm_spl_defconfig
+ make
+
Running U-Boot
--------------
The minimal QEMU command line to get U-Boot up and running is:
@@ -50,6 +55,10 @@ The minimal QEMU command line to get U-Boot up and running is:
qemu-system-aarch64 -machine virt -nographic -cpu cortex-a57 -bios u-boot.bin
+- For ARM with SPL::
+
+ qemu-system-arm -machine virt -nographic -bios image.bin
+
Note that for some odd reason qemu-system-aarch64 needs to be explicitly
told to use a 64-bit CPU or it will boot in 32-bit mode. The -nographic argument
ensures that output appears on the terminal. Use Ctrl-A X to quit.
@@ -85,6 +94,35 @@ can be enabled with the following command line parameters:
These have been tested in QEMU 2.9.0 but should work in at least 2.5.0 as well.
+SPL Description
+---------------
+
+As you see above, running the SPL build is a little different, since there are
+two binaries to load into memory: SPL and U-Boot proper. Binman is used to
+produce the combined `image.bin` containing these. See
+`arch/arm/dts/qemu-arm-u-boot.dtsi` for the definition. A custom loader called
+`spl_qemu_load_image()` is used to access the U-Boot binary from within SPL.
+
+A sample run is shown below::
+
+ U-Boot SPL 2021.10 (Oct 28 2021 - 20:57:27 -0600)
+ Trying to boot from QEMU
+
+
+ U-Boot 2021.10 (Oct 28 2021 - 20:57:27 -0600)
+
+ DRAM: 128 MiB
+ Flash: 64 MiB
+ Loading Environment from Flash... *** Warning - bad CRC, using default environment
+
+ In: pl011@9000000
+ Out: pl011@9000000
+ Err: pl011@9000000
+ Net: eth0: virtio-net#32
+ Hit any key to stop autoboot: 0
+ =>
+
+
Debug UART
----------
Add an SPL build for qemu so we can test the standard passage feature. Include a binman definition so that SPL and U-Boot are in the same image. For now this just boots to a prompt. Signed-off-by: Simon Glass <sjg@chromium.org> --- arch/arm/dts/qemu-arm-u-boot.dtsi | 22 +++++++++ arch/arm/mach-qemu/Kconfig | 9 ++++ board/emulation/qemu-arm/Kconfig | 23 +++++++-- board/emulation/qemu-arm/MAINTAINERS | 1 + board/emulation/qemu-arm/Makefile | 1 + board/emulation/qemu-arm/spl.c | 27 +++++++++++ configs/qemu_arm_spl_defconfig | 72 ++++++++++++++++++++++++++++ doc/board/emulation/qemu-arm.rst | 38 +++++++++++++++ 8 files changed, 189 insertions(+), 4 deletions(-) create mode 100644 arch/arm/dts/qemu-arm-u-boot.dtsi create mode 100644 board/emulation/qemu-arm/spl.c create mode 100644 configs/qemu_arm_spl_defconfig