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sun4m: pass initrd size to OpenBIOS via fw_cfg interface 

This is to enable OpenBIOS to claim the initrd memory as in-use before attempting
to boot the kernel.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This commit is contained in:
Mark Cave-Ayland 2019-01-25 16:30:04 +00:00
parent ad280559c6
commit 6031ff8b0a
1 changed files with 14 additions and 11 deletions
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25
hw/sparc/sun4m.c
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@ -224,11 +224,12 @@ static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
static unsigned long sun4m_load_kernel(const char *kernel_filename,
const char *initrd_filename,
ram_addr_t RAM_size)
ram_addr_t RAM_size,
uint32_t *initrd_size)
{
int linux_boot;
unsigned int i;
long initrd_size, kernel_size;
long kernel_size;
uint8_t *ptr;
linux_boot = (kernel_filename != NULL);
@ -258,23 +259,23 @@ static unsigned long sun4m_load_kernel(const char *kernel_filename,
}
/* load initrd */
initrd_size = 0;
*initrd_size = 0;
if (initrd_filename) {
initrd_size = load_image_targphys(initrd_filename,
INITRD_LOAD_ADDR,
RAM_size - INITRD_LOAD_ADDR);
if (initrd_size < 0) {
*initrd_size = load_image_targphys(initrd_filename,
INITRD_LOAD_ADDR,
RAM_size - INITRD_LOAD_ADDR);
if ((int)*initrd_size < 0) {
error_report("could not load initial ram disk '%s'",
initrd_filename);
exit(1);
}
}
if (initrd_size > 0) {
if (*initrd_size > 0) {
for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
ptr = rom_ptr(KERNEL_LOAD_ADDR + i, 24);
if (ptr && ldl_p(ptr) == 0x48647253) { /* HdrS */
stl_p(ptr + 16, INITRD_LOAD_ADDR);
stl_p(ptr + 20, initrd_size);
stl_p(ptr + 20, *initrd_size);
break;
}
}
@ -844,6 +845,7 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
qemu_irq *cpu_irqs[MAX_CPUS], slavio_irq[32], slavio_cpu_irq[MAX_CPUS];
qemu_irq fdc_tc;
unsigned long kernel_size;
uint32_t initrd_size;
DriveInfo *fd[MAX_FD];
FWCfgState *fw_cfg;
unsigned int num_vsimms;
@ -1022,9 +1024,10 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
empty_slot_init(hwdef->bpp_base, 0x20);
}
initrd_size = 0;
kernel_size = sun4m_load_kernel(machine->kernel_filename,
machine->initrd_filename,
machine->ram_size);
machine->ram_size, &initrd_size);
nvram_init(nvram, (uint8_t *)&nd_table[0].macaddr, machine->kernel_cmdline,
machine->boot_order, machine->ram_size, kernel_size,
@ -1067,7 +1070,7 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, 0);
}
fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, INITRD_LOAD_ADDR);
fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, 0); // not used
fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, machine->boot_order[0]);
qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);
}