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target-sh4: r2d --append option support

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Add linux kernel command line ("--append" option) support.
Fix kernel loading address to appropriate position when --append used.
Using --kernel but --append case is left untouched for backward compatibility.

This also change the host<->SH address mapping for r2d to
 host addr == phys_ram_base + SH addr.

Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6916 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-03-28 23:14:32 +00:00
parent f364515c83
commit e8afa06581
1 changed files with 16 additions and 5 deletions
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21
hw/r2d.c
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@ -37,6 +37,9 @@
#define SM501_VRAM_SIZE 0x800000
/* CONFIG_BOOT_LINK_OFFSET of Linux kernel */
#define LINUX_LOAD_OFFSET 0x800000
#define PA_IRLMSK 0x00
#define PA_POWOFF 0x30
#define PA_VERREG 0x32
@ -212,6 +215,7 @@ static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
}
/* Allocate memory space */
qemu_ram_alloc(SDRAM_BASE); /* to adjust the offset */
sdram_addr = qemu_ram_alloc(SDRAM_SIZE);
cpu_register_physical_memory(SDRAM_BASE, SDRAM_SIZE, sdram_addr);
/* Register peripherals */
@ -233,20 +237,27 @@ static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
pci_nic_init(pci, &nd_table[i], (i==0)? 2<<3: -1, "rtl8139");
/* Todo: register on board registers */
{
if (kernel_filename) {
int kernel_size;
/* initialization which should be done by firmware */
stl_phys(SH7750_BCR1, 1<<3); /* cs3 SDRAM */
stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
kernel_size = load_image(kernel_filename, phys_ram_base);
if (kernel_cmdline) {
kernel_size = load_image_targphys(kernel_filename,
SDRAM_BASE + LINUX_LOAD_OFFSET,
SDRAM_SIZE - LINUX_LOAD_OFFSET);
env->pc = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000;
pstrcpy_targphys(SDRAM_BASE + 0x10100, 256, kernel_cmdline);
} else {
kernel_size = load_image(kernel_filename, SDRAM_BASE);
env->pc = SDRAM_BASE | 0xa0000000; /* Start from P2 area */
}
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename);
exit(1);
}
env->pc = SDRAM_BASE | 0xa0000000; /* Start from P2 area */
}
}
@ -254,5 +265,5 @@ QEMUMachine r2d_machine = {
.name = "r2d",
.desc = "r2d-plus board",
.init = r2d_init,
.ram_require = (SDRAM_SIZE + SM501_VRAM_SIZE) | RAMSIZE_FIXED,
.ram_require = (SDRAM_BASE + SDRAM_SIZE + SM501_VRAM_SIZE) | RAMSIZE_FIXED,
};