| Ralf Baechle | 0711962 | 2005-09-03 15:56:11 -0700 | [diff] [blame] | 1 | #include <linux/init.h> |
| Ralf Baechle | fe3d728 | 2005-11-28 13:15:08 +0000 | [diff] [blame] | 2 | #include <linux/string.h> |
| 3 | #include <asm/addrspace.h> |
| Ralf Baechle | 0711962 | 2005-09-03 15:56:11 -0700 | [diff] [blame] | 4 | #include <asm/bootinfo.h> |
| Ralf Baechle | a57c228 | 2007-11-04 04:49:44 +0000 | [diff] [blame] | 5 | #include <asm/io.h> |
| 6 | |
| 7 | #define QEMU_PORT_BASE 0xb4000000 |
| Ralf Baechle | 0711962 | 2005-09-03 15:56:11 -0700 | [diff] [blame] | 8 | |
| 9 | void __init prom_init(void) |
| 10 | { |
| Ralf Baechle | fe3d728 | 2005-11-28 13:15:08 +0000 | [diff] [blame] | 11 | int *cmdline; |
| 12 | |
| 13 | cmdline = (int *) (CKSEG0 + (0x10 << 20) - 260); |
| 14 | if (*cmdline == 0x12345678) { |
| 15 | if (*(char *)(cmdline + 1)) |
| Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 16 | strcpy(arcs_cmdline, (char *)(cmdline + 1)); |
| Ralf Baechle | fe3d728 | 2005-11-28 13:15:08 +0000 | [diff] [blame] | 17 | add_memory_region(0x0<<20, cmdline[-1], BOOT_MEM_RAM); |
| 18 | } else { |
| 19 | add_memory_region(0x0<<20, 0x10<<20, BOOT_MEM_RAM); |
| 20 | } |
| Ralf Baechle | a57c228 | 2007-11-04 04:49:44 +0000 | [diff] [blame] | 21 | |
| 22 | |
| 23 | set_io_port_base(QEMU_PORT_BASE); |
| Ralf Baechle | 0711962 | 2005-09-03 15:56:11 -0700 | [diff] [blame] | 24 | } |