| wdenk | 452cfd6 | 2002-11-19 11:04:11 +0000 | [diff] [blame^] | 1 | #include "macros.h" |
| 2 | |
| 3 | |
| 4 | |
| 5 | #define GLOBALINFO0 0x50 |
| 6 | #define GLOBALINFO0_BO (1<<7) |
| 7 | #define GLOBALINFO2_B1ARBITER (1<<6) |
| 8 | #define HBUSACR0 0x5c |
| 9 | #define HBUSACR2_BURST (1<<0) |
| 10 | #define HBUSACR2_LAT (1<<1) |
| 11 | |
| 12 | #define RECEIVER_HOLDING 0 |
| 13 | #define TRANSMITTER_HOLDING 0 |
| 14 | #define INTERRUPT_ENABLE 1 |
| 15 | #define INTERRUPT_STATUS 2 |
| 16 | #define FIFO_CONTROL 2 |
| 17 | #define LINE_CONTROL 3 |
| 18 | #define MODEM_CONTROL 4 |
| 19 | #define LINE_STATUS 5 |
| 20 | #define MODEM_STATUS 6 |
| 21 | #define SCRATCH_PAD 7 |
| 22 | |
| 23 | #define DIVISOR_LATCH_LSB 0 |
| 24 | #define DIVISOR_LATCH_MSB 1 |
| 25 | #define PRESCALER_DIVISION 5 |
| 26 | |
| 27 | #define UART(x) (0x3f8+(x)) |
| 28 | |
| 29 | #define GLOBALINFO0 0x50 |
| 30 | #define GLOBALINFO0_BO (1<<7) |
| 31 | #define GLOBALINFO2_B1ARBITER (1<<6) |
| 32 | #define HBUSACR0 0x5c |
| 33 | #define HBUSACR2_BURST (1<<0) |
| 34 | #define HBUSACR2_LAT (1<<1) |
| 35 | |
| 36 | #define SUPERIO_1 ((7 << 3) | (0)) |
| 37 | #define SUPERIO_2 ((7 << 3) | (1)) |
| 38 | |
| 39 | .globl board_asm_init |
| 40 | |
| 41 | board_asm_init: |
| 42 | mflr r29 |
| 43 | /* Set 'Must-set' register */ |
| 44 | li r3, 0 |
| 45 | li r4, 0 |
| 46 | li r5, 0x5e |
| 47 | bl pci_read_cfg_byte |
| 48 | ori r3, r3, (1<<1) |
| 49 | xori r6, r3, (1<<1) |
| 50 | li r3, 0 |
| 51 | bl pci_write_cfg_byte |
| 52 | |
| 53 | li r3, 0 |
| 54 | li r5, 0x52 |
| 55 | bl pci_read_cfg_byte |
| 56 | ori r6, r3, (1<<6) |
| 57 | li r3, 0 |
| 58 | bl pci_write_cfg_byte |
| 59 | |
| 60 | li r3, 0 |
| 61 | li r4, 0x08 |
| 62 | li r5, 0xd2 |
| 63 | bl pci_read_cfg_byte |
| 64 | ori r6, r3, (1<<2) |
| 65 | li r3, 0 |
| 66 | bl pci_write_cfg_byte |
| 67 | |
| 68 | |
| 69 | /* Do PCI reset */ |
| 70 | /* li r3, 0 |
| 71 | li r4, 0x38 |
| 72 | li r5, 0x47 |
| 73 | bl pci_read_cfg_byte |
| 74 | ori r6, r3, 0x01 |
| 75 | li r3, 0 |
| 76 | li r4, 0x38 |
| 77 | li r5, 0x47 |
| 78 | bl pci_write_cfg_byte*/ |
| 79 | |
| 80 | |
| 81 | /* Enable NVRAM for environment */ |
| 82 | li r3, 0 |
| 83 | li r4, 0 |
| 84 | li r5, 0x56 |
| 85 | li r6, 0x0B |
| 86 | bl pci_write_cfg_byte |
| 87 | |
| 88 | |
| 89 | /* Init Super-I/O chips */ |
| 90 | |
| 91 | siowb 0x40, 0x08 |
| 92 | siowb 0x41, 0x01 |
| 93 | siowb 0x45, 0x80 |
| 94 | siowb 0x46, 0x60 |
| 95 | siowb 0x47, 0x20 |
| 96 | siowb 0x48, 0x01 |
| 97 | siowb 0x4a, 0xc4 |
| 98 | siowb 0x50, 0x0e |
| 99 | siowb 0x51, 0x76 |
| 100 | siowb 0x52, 0x34 |
| 101 | siowb 0x54, 0x00 |
| 102 | siowb 0x55, 0x90 |
| 103 | siowb 0x56, 0x99 |
| 104 | siowb 0x57, 0x90 |
| 105 | siowb 0x85, 0x01 |
| 106 | |
| 107 | /* Enable configuration mode for SuperIO */ |
| 108 | li r3, 0 |
| 109 | li r4, (7<<3) |
| 110 | li r5, 0x85 |
| 111 | bl pci_read_cfg_byte |
| 112 | ori r6, r3, 0x02 |
| 113 | mr r31, r6 |
| 114 | li r3,0 |
| 115 | bl pci_write_cfg_byte |
| 116 | |
| 117 | /* COM1 as 3f8 */ |
| 118 | outb 0x3f0, 0xe7 |
| 119 | outb 0x3f1, 0xfe |
| 120 | |
| 121 | /* COM2 as 2f8 */ |
| 122 | outb 0x3f0, 0xe8 |
| 123 | outb 0x3f1, 0xeb |
| 124 | |
| 125 | /* Enable */ |
| 126 | outb 0x3f0, 0xe2 |
| 127 | inb r3, 0x3f1 |
| 128 | ori r3, r3, 0x0c |
| 129 | outb 0x3f0, 0xe2 |
| 130 | outbr 0x3f1, r3 |
| 131 | |
| 132 | /* Disable configuration mode */ |
| 133 | li r3, 0 |
| 134 | li r4, (7<<3) |
| 135 | li r5, 0x85 |
| 136 | mr r6, r31 |
| 137 | bl pci_write_cfg_byte |
| 138 | |
| 139 | /* Set line control */ |
| 140 | outb UART(LINE_CONTROL), 0x83 |
| 141 | outb UART(DIVISOR_LATCH_LSB), 0x0c |
| 142 | outb UART(DIVISOR_LATCH_MSB), 0x00 |
| 143 | outb UART(LINE_CONTROL), 0x3 |
| 144 | |
| 145 | mtlr r29 |
| 146 | blr |
| 147 | |
| 148 | |
| 149 | .globl new_reset |
| 150 | .globl new_reset_end |
| 151 | new_reset: |
| 152 | li r0, 0x100 |
| 153 | oris r0, r0, 0xFFF0 |
| 154 | mtlr r0 |
| 155 | blr |
| 156 | |
| 157 | new_reset_end: |