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[PATCH 2/3] hw/mips/boston: Allow loading elf kernel and dtb
From: |
Jiaxun Yang |
Subject: |
[PATCH 2/3] hw/mips/boston: Allow loading elf kernel and dtb |
Date: |
Thu, 29 Jul 2021 11:39:58 +0800 |
ELF kernel allows us debugging much easier with DWARF symbols.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
hw/mips/boston.c | 38 ++++++++++++++++++++++++++++++++++----
1 file changed, 34 insertions(+), 4 deletions(-)
diff --git a/hw/mips/boston.c b/hw/mips/boston.c
index a5746ede65..42b31a1ce4 100644
--- a/hw/mips/boston.c
+++ b/hw/mips/boston.c
@@ -20,6 +20,7 @@
#include "qemu/osdep.h"
#include "qemu/units.h"
+#include "elf.h"
#include "hw/boards.h"
#include "hw/char/serial.h"
#include "hw/ide/pci.h"
@@ -546,10 +547,39 @@ static void boston_mach_init(MachineState *machine)
exit(1);
}
} else if (machine->kernel_filename) {
- fit_err = load_fit(&boston_fit_loader, machine->kernel_filename, s);
- if (fit_err) {
- error_report("unable to load FIT image");
- exit(1);
+ uint64_t kernel_entry, kernel_low, kernel_high, kernel_size;
+
+ kernel_size = load_elf(machine->kernel_filename, NULL,
+ cpu_mips_kseg0_to_phys, NULL,
+ (uint64_t *)&kernel_entry,
+ (uint64_t *)&kernel_low, (uint64_t *)&kernel_high,
+ NULL, 0, EM_MIPS, 1, 0);
+
+ if (kernel_size) {
+ hwaddr dtb_paddr = QEMU_ALIGN_UP(kernel_high, 64 * KiB);
+ hwaddr dtb_vaddr = cpu_mips_phys_to_kseg0(NULL, dtb_paddr);
+
+ s->kernel_entry = kernel_entry;
+ if (machine->dtb) {
+ int dt_size;
+ const void *dtb_file_data, *dtb_load_data;
+
+ dtb_file_data = load_device_tree(machine->dtb, &dt_size);
+ dtb_load_data = boston_fdt_filter(s, dtb_file_data, NULL,
&dtb_vaddr);
+
+ /* Calculate real fdt size after filter */
+ dt_size = fdt_totalsize(dtb_load_data);
+ rom_add_blob_fixed("dtb", dtb_load_data, dt_size, dtb_paddr);
+ g_free((void *) dtb_file_data);
+ g_free((void *) dtb_load_data);
+ }
+ } else {
+ /* Try to load file as FIT */
+ fit_err = load_fit(&boston_fit_loader, machine->kernel_filename,
s);
+ if (fit_err) {
+ error_report("unable to load kernel image");
+ exit(1);
+ }
}
gen_firmware(memory_region_get_ram_ptr(flash) + 0x7c00000,
--
2.32.0