If a -bios option is specified on the command line, load the image into the internal ROM memory region, which contains the first instructions run by the CPU after reset.
A minimal Apache-2.0-licensed boot ROM can be found at https://github.com/google/vbootrom It is by no means feature complete, but it is enough to launch the Nuvoton bootblock[1] from offset 0 in the flash, which in turn will launch u-boot and finally the Linux kernel. [1] https://github.com/Nuvoton-Israel/bootblock Reviewed-by: Tyrone Ting <kft...@nuvoton.com> Signed-off-by: Havard Skinnemoen <hskinnem...@google.com> --- hw/arm/npcm7xx_boards.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/hw/arm/npcm7xx_boards.c b/hw/arm/npcm7xx_boards.c index d78d9f991b..80cf1535f1 100644 --- a/hw/arm/npcm7xx_boards.c +++ b/hw/arm/npcm7xx_boards.c @@ -19,8 +19,11 @@ #include "hw/arm/boot.h" #include "hw/arm/npcm7xx.h" #include "hw/core/cpu.h" +#include "hw/loader.h" #include "qapi/error.h" +#include "qemu-common.h" #include "qemu/units.h" +#include "sysemu/sysemu.h" #define NPCM750_EVB_POWER_ON_STRAPS 0x00001ff7 #define QUANTA_GSJ_POWER_ON_STRAPS 0x00001fff @@ -34,6 +37,25 @@ static struct arm_boot_info npcm7xx_binfo = { .board_id = -1, }; +static void npcm7xx_load_bootrom(NPCM7xxState *soc) +{ + if (bios_name) { + g_autofree char *filename = NULL; + int ret; + + filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); + if (!filename) { + error_report("Could not find ROM image '%s'", bios_name); + exit(1); + } + ret = load_image_mr(filename, &soc->irom); + if (ret < 0) { + error_report("Failed to load ROM image '%s'", filename); + exit(1); + } + } +} + static void npcm7xx_load_kernel(MachineState *machine, NPCM7xxState *soc) { NPCM7xxClass *sc = NPCM7XX_GET_CLASS(soc); @@ -73,6 +95,7 @@ static void npcm750_evb_init(MachineState *machine) npcm7xx_connect_dram(soc, machine->ram); qdev_realize(DEVICE(soc), NULL, &error_abort); + npcm7xx_load_bootrom(soc); npcm7xx_load_kernel(machine, soc); } @@ -84,6 +107,7 @@ static void quanta_gsj_init(MachineState *machine) npcm7xx_connect_dram(soc, machine->ram); qdev_realize(DEVICE(soc), NULL, &error_abort); + npcm7xx_load_bootrom(soc); npcm7xx_load_kernel(machine, soc); } -- 2.27.0.383.g050319c2ae-goog
