| 1 | #include <linux/cpu.h> |
| 2 | #include <linux/init.h> |
| 3 | #include <linux/kernel.h> |
| 4 | #include <linux/pm.h> |
| 5 | #include <linux/io.h> |
| 6 | #include <linux/ioport.h> |
| 7 | #include <asm/reboot.h> |
| 8 | #include <asm/system.h> |
| 9 | #include <ifxmips.h> |
| 10 | #include <ifxmips_cgu.h> |
| 11 | |
| 12 | #define SYSTEM_DANUBE "Danube" |
| 13 | #define SYSTEM_DANUBE_CHIPID1 0x00129083 |
| 14 | #define SYSTEM_DANUBE_CHIPID2 0x0012B083 |
| 15 | |
| 16 | #define SYSTEM_TWINPASS "Twinpass" |
| 17 | #define SYSTEM_TWINPASS_CHIPID 0x0012D083 |
| 18 | |
| 19 | static unsigned int chiprev = 0; |
| 20 | unsigned char ifxmips_sys_type[IFXMIPS_SYS_TYPE_LEN]; |
| 21 | |
| 22 | unsigned int |
| 23 | ifxmips_get_cpu_ver(void) |
| 24 | { |
| 25 | return (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0xF0000000) >> 28; |
| 26 | } |
| 27 | EXPORT_SYMBOL(ifxmips_get_cpu_ver); |
| 28 | |
| 29 | const char* |
| 30 | get_system_type(void) |
| 31 | { |
| 32 | return ifxmips_sys_type; |
| 33 | } |
| 34 | |
| 35 | static void |
| 36 | ifxmips_machine_restart(char *command) |
| 37 | { |
| 38 | printk(KERN_NOTICE "System restart\n"); |
| 39 | local_irq_disable(); |
| 40 | ifxmips_w32(ifxmips_r32(IFXMIPS_RCU_RST) | IFXMIPS_RCU_RST_ALL, |
| 41 | IFXMIPS_RCU_RST); |
| 42 | for(;;); |
| 43 | } |
| 44 | |
| 45 | static void |
| 46 | ifxmips_machine_halt(void) |
| 47 | { |
| 48 | printk(KERN_NOTICE "System halted.\n"); |
| 49 | local_irq_disable(); |
| 50 | for(;;); |
| 51 | } |
| 52 | |
| 53 | static void |
| 54 | ifxmips_machine_power_off(void) |
| 55 | { |
| 56 | printk(KERN_NOTICE "Please turn off the power now.\n"); |
| 57 | local_irq_disable(); |
| 58 | for(;;); |
| 59 | } |
| 60 | |
| 61 | void __init |
| 62 | ifxmips_soc_setup(void) |
| 63 | { |
| 64 | char *name = SYSTEM_DANUBE; |
| 65 | ioport_resource.start = IOPORT_RESOURCE_START; |
| 66 | ioport_resource.end = IOPORT_RESOURCE_END; |
| 67 | iomem_resource.start = IOMEM_RESOURCE_START; |
| 68 | iomem_resource.end = IOMEM_RESOURCE_END; |
| 69 | |
| 70 | _machine_restart = ifxmips_machine_restart; |
| 71 | _machine_halt = ifxmips_machine_halt; |
| 72 | pm_power_off = ifxmips_machine_power_off; |
| 73 | |
| 74 | chiprev = (ifxmips_r32(IFXMIPS_MPS_CHIPID) & 0x0FFFFFFF); |
| 75 | |
| 76 | switch (chiprev) |
| 77 | { |
| 78 | case SYSTEM_DANUBE_CHIPID1: |
| 79 | case SYSTEM_DANUBE_CHIPID2: |
| 80 | name = SYSTEM_DANUBE; |
| 81 | break; |
| 82 | |
| 83 | case SYSTEM_TWINPASS_CHIPID: |
| 84 | name = SYSTEM_TWINPASS; |
| 85 | break; |
| 86 | |
| 87 | default: |
| 88 | printk(KERN_ERR "This is not a danube chiprev : 0x%08X\n", chiprev); |
| 89 | BUG(); |
| 90 | break; |
| 91 | } |
| 92 | snprintf(ifxmips_sys_type, IFXMIPS_SYS_TYPE_LEN - 1, "%s rev1.%d %dMhz", |
| 93 | name, ifxmips_get_cpu_ver(), |
| 94 | ifxmips_get_cpu_hz() / 1000000); |
| 95 | ifxmips_sys_type[IFXMIPS_SYS_TYPE_LEN - 1] = '\0'; |
| 96 | } |
| 97 | |
