| Message ID | 20210929151211.108-3-jiaxun.yang@flygoat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | hw/mips/boston: ELF kernel support | expand |
On Wed, 29 Sep 2021, Jiaxun Yang wrote: > ELF kernel allows us debugging much easier with DWARF symbols. > > Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> > Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> > -- > v2: Use g_autofree > --- > hw/mips/boston.c | 36 ++++++++++++++++++++++++++++++++---- > 1 file changed, 32 insertions(+), 4 deletions(-) > > diff --git a/hw/mips/boston.c b/hw/mips/boston.c > index 5c720440fb..5d3f054a3e 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 +547,37 @@ 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, These (uint64_t *) casts should not be needed and kernel_low seems to be unused so you could just pass NULL for it (see commit 617160c9e1f8). Regards, BALATON Zoltan > + 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; > + g_autofree 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); > + } > + } 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, >
在 2021/9/29 16:36, BALATON Zoltan 写道: > > > On Wed, 29 Sep 2021, Jiaxun Yang wrote: > >> ELF kernel allows us debugging much easier with DWARF symbols. >> >> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> >> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> >> -- >> v2: Use g_autofree >> --- >> hw/mips/boston.c | 36 ++++++++++++++++++++++++++++++++---- >> 1 file changed, 32 insertions(+), 4 deletions(-) >> >> diff --git a/hw/mips/boston.c b/hw/mips/boston.c >> index 5c720440fb..5d3f054a3e 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 +547,37 @@ 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, > > These (uint64_t *) casts should not be needed and kernel_low seems to > be unused so you could just pass NULL for it (see commit 617160c9e1f8). Oops, my fault, will fix in v3. Thanks! - Jiaxun > > Regards, > BALATON Zoltan
diff --git a/hw/mips/boston.c b/hw/mips/boston.c index 5c720440fb..5d3f054a3e 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 +547,37 @@ 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; + g_autofree 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); + } + } 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,