void arm_board_linux_default_cmdline(char *cmdline, u32 cmdline_sz)
{
arm_strcpy(cmdline, "root=/dev/ram rw earlyprintk console=ttyAMA0");
/* VirtIO Network Device */
arm_strcat(cmdline, " virtio_mmio.device=4K@0x40100000:50");
/* VirtIO Block Device */
arm_strcat(cmdline, " virtio_mmio.device=4K@0x40200000:51");
/* VirtIO Console Device */
arm_strcat(cmdline, " virtio_mmio.device=4K@0x40300000:52");
}
void arm_board_linux_default_cmdline(char *cmdline, u32 cmdline_sz)
{
arm_strcpy(cmdline, "root=/dev/ram rw earlyprintk");
/* VirtIO Network Device */
arm_strcat(cmdline, " virtio_mmio.device=64K@0x20100000:42");
/* SabreLite/Nitrogen6X specific */
arm_strcat(cmdline, " enable_wait_mode=off "
"video=mxcfb0:dev=ldb,LDB-XGA,if=RGB666 video=mxcfb1:off "
"video=mxcfb2:off video=mxcfb3:off fbmem=10M "
"console=ttymxc1,115200 vmalloc=400M consoleblank=0 "
"mxc_hdmi.only_cea=1");
}
void arm_cmd_linux_cmdline(int argc, char **argv)
{
if (argc >= 2) {
int cnt = 1;
linux_cmdline[0] = 0;
while (cnt < argc) {
arm_strcat(linux_cmdline, argv[cnt]);
arm_strcat(linux_cmdline, " ");
cnt++;
}
}
arm_puts ("linux_cmdline = \"");
arm_puts(linux_cmdline);
arm_puts ("\"\n");
return;
}
void arm_cmd_start_linux(int argc, char **argv)
{
u64 kernel_addr, fdt_addr;
u64 initrd_addr, initrd_size;
int err;
char cfg_str[10];
u64 meminfo[2];
if (argc != 5) {
arm_puts ("start_linux: must provide <kernel_addr>, <initrd_addr>, <initrd_size> and <fdt_addr>\n");
return;
}
/* Parse the arguments from command line */
kernel_addr = arm_hexstr2ulonglong(argv[1]);
initrd_addr = arm_hexstr2ulonglong(argv[2]);
initrd_size = arm_hexstr2ulonglong(argv[3]);
fdt_addr = arm_hexstr2ulonglong(argv[4]);
meminfo[0] = arm_board_ram_start();
meminfo[1] = arm_board_ram_size();
/* Fillup/fixup the fdt blob with following:
* - initrd start, end
* - kernel cmd line
* - number of cpus */
if ((err = fdt_fixup_memory_banks((void *)fdt_addr, (&meminfo[0]),
(&meminfo[1]), 1))) {
arm_printf("%s: fdt_fixup_memory_banks() failed: %s\n", __func__,
fdt_strerror(err));
return;
}
sprintf(cfg_str, " mem=%dM maxcpus=%d",
(int)(meminfo[1] >> 20), CONFIG_NR_CPUS);
arm_strcat(linux_cmdline, cfg_str);
if ((err = fdt_chosen((void *)fdt_addr, 1))) {
arm_printf("%s: fdt_chosen() failed: %s\n", __func__,
fdt_strerror(err));
return;
}
if ((err = fdt_initrd((void *)fdt_addr, initrd_addr,
initrd_addr + initrd_size, 1))) {
arm_printf("%s: fdt_initrd() failed: %s\n", __func__,
fdt_strerror(err));
return;
}
/* Disable interrupts and timer */
arm_board_timer_disable();
arm_irq_disable();
arm_mmu_cleanup();
/* Jump to Linux Kernel
* r0 -> dtb address
*/
arm_puts("Jumping into linux ...\n");
((linux_entry_t)kernel_addr)(fdt_addr);
/* We should never reach here */
while (1);
return;
}
