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ppc/pegasos2: Add support for -initrd command line option 

This also changes type of sz local variable to ssize_t because it is
used to store return value of load_elf() and load_image_targphys() that
return ssize_t.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-ID: <20230704181920.27B58746335@zero.eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
BALATON Zoltan 2023-07-04 20:19:20 +02:00 committed by Daniel Henrique Barboza
parent 053075097a
commit ebe0e9bbcb
1 changed files with 31 additions and 1 deletions
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32
hw/ppc/pegasos2.c
View File

@ -44,6 +44,8 @@
#define PROM_ADDR 0xfff00000
#define PROM_SIZE 0x80000
#define INITRD_MIN_ADDR 0x600000
#define KVMPPC_HCALL_BASE 0xf000
#define KVMPPC_H_RTAS (KVMPPC_HCALL_BASE + 0x0)
#define KVMPPC_H_VOF_CLIENT (KVMPPC_HCALL_BASE + 0x5)
@ -80,6 +82,8 @@ struct Pegasos2MachineState {
uint64_t kernel_addr;
uint64_t kernel_entry;
uint64_t kernel_size;
uint64_t initrd_addr;
uint64_t initrd_size;
};
static void *build_fdt(MachineState *machine, int *fdt_size);
@ -117,7 +121,8 @@ static void pegasos2_init(MachineState *machine)
I2CBus *i2c_bus;
const char *fwname = machine->firmware ?: PROM_FILENAME;
char *filename;
int i, sz;
int i;
ssize_t sz;
uint8_t *spd_data;
/* init CPU */
@ -213,6 +218,20 @@ static void pegasos2_init(MachineState *machine)
warn_report("Using Virtual OpenFirmware but no -kernel option.");
}
if (machine->initrd_filename) {
pm->initrd_addr = pm->kernel_addr + pm->kernel_size + 64 * KiB;
pm->initrd_addr = ROUND_UP(pm->initrd_addr, 4);
pm->initrd_addr = MAX(pm->initrd_addr, INITRD_MIN_ADDR);
sz = load_image_targphys(machine->initrd_filename, pm->initrd_addr,
machine->ram_size - pm->initrd_addr);
if (sz <= 0) {
error_report("Could not load initrd '%s'",
machine->initrd_filename);
exit(1);
}
pm->initrd_size = sz;
}
if (!pm->vof && machine->kernel_cmdline && machine->kernel_cmdline[0]) {
warn_report("Option -append may be ineffective with -bios.");
}
@ -335,6 +354,11 @@ static void pegasos2_machine_reset(MachineState *machine, ShutdownCause reason)
error_report("Memory for kernel is in use");
exit(1);
}
if (pm->initrd_size &&
vof_claim(pm->vof, pm->initrd_addr, pm->initrd_size, 0) == -1) {
error_report("Memory for initrd is in use");
exit(1);
}
fdt = build_fdt(machine, &sz);
/* FIXME: VOF assumes entry is same as load address */
d[0] = cpu_to_be64(pm->kernel_entry);
@ -966,6 +990,12 @@ static void *build_fdt(MachineState *machine, int *fdt_size)
qemu_fdt_setprop_string(fdt, "/memory@0", "name", "memory");
qemu_fdt_add_subnode(fdt, "/chosen");
if (pm->initrd_addr && pm->initrd_size) {
qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
pm->initrd_addr + pm->initrd_size);
qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
pm->initrd_addr);
}
qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
machine->kernel_cmdline ?: "");
qemu_fdt_setprop_string(fdt, "/chosen", "name", "chosen");