mirror of https://github.com/xemu-project/xemu.git
vexpress: Add support for the -bios flag to provide firmware
Right now to run firmware inside the QEMU VExpress model requires padding out the firmware image to the size of the virtual flash and passing it in via the -pflash argument. If the firmware image is passed without padding, then QEMU will fail. Also, when passed as a -pflash argument, QEMU treats the file as persistent storage and will modify the file. The -bios flag provides the semantics that we want for providing a firmware image. This patch maps the contents of the -bios file into the address space at the boot flash location. Tested with the vexpress-a15 model and the Tianocore port. Signed-off-by: Grant Likely <grant.likely@linaro.org> Tested-by: Roy Franz <roy.franz@linaro.org> [PMM: folded long line, removed stray \n from error message, use correct variable for printing image name, exit(1) rather than 0] Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -28,6 +28,7 @@
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#include "net/net.h"
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#include "sysemu/sysemu.h"
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#include "hw/boards.h"
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#include "hw/loader.h"
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#include "exec/address-spaces.h"
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#include "sysemu/blockdev.h"
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#include "hw/block/flash.h"
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@ -528,6 +529,18 @@ static void vexpress_common_init(VEDBoardInfo *daughterboard,
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daughterboard->init(daughterboard, machine->ram_size, machine->cpu_model,
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pic);
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/*
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* If a bios file was provided, attempt to map it into memory
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*/
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if (bios_name) {
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const char *fn = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
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if (!fn || load_image_targphys(fn, map[VE_NORFLASH0],
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VEXPRESS_FLASH_SIZE) < 0) {
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error_report("Could not load ROM image '%s'", bios_name);
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exit(1);
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}
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}
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/* Motherboard peripherals: the wiring is the same but the
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* addresses vary between the legacy and A-Series memory maps.
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*/
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