2 * BCM63XX specific implementation parts
4 * Copyright (C) 2014 Jonas Gorski <jogo@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
13 #include "cp0regdef.h"
15 #define READREG(r) *(volatile unsigned int *)(r)
16 #define WRITEREG(r,v) *(volatile unsigned int *)(r) = v
18 #define UART_IR_REG 0x10
19 #define UART_FIFO_REG 0x14
21 unsigned long uart_base;
23 static void wait_xfered(void)
28 val = READREG(uart_base + UART_IR_REG);
34 void board_putc(int ch)
40 WRITEREG(uart_base + UART_FIFO_REG, ch);
44 #define PRID_IMP_BMIPS32_REV4 0x4000
45 #define PRID_IMP_BMIPS32_REV8 0x8000
46 #define PRID_IMP_BMIPS3300 0x9000
47 #define PRID_IMP_BMIPS3300_ALT 0x9100
48 #define PRID_IMP_BMIPS3300_BUG 0x0000
49 #define PRID_IMP_BMIPS43XX 0xa000
53 unsigned long prid, chipid, chipid_reg;
55 prid = read_32bit_c0_register($15, 0);
57 switch (prid & 0xff00) {
58 case PRID_IMP_BMIPS32_REV4:
59 case PRID_IMP_BMIPS32_REV8:
60 case PRID_IMP_BMIPS3300_ALT:
61 case PRID_IMP_BMIPS3300_BUG:
62 chipid_reg = 0xfffe0000;
64 case PRID_IMP_BMIPS3300:
65 if ((prid & 0xff) >= 0x33)
66 chipid_reg = 0xb0000000;
68 chipid_reg = 0xfffe0000;
70 case PRID_IMP_BMIPS43XX:
71 if ((prid & 0xff) >= 0x30)
72 chipid_reg = 0xb0000000;
74 chipid_reg = 0xfffe0000;
80 chipid = READREG(chipid_reg);
82 switch (chipid >> 16) {
89 uart_base = chipid_reg + 0x100;
93 uart_base = chipid_reg + 0x180;
98 uart_base = chipid_reg + 0x300;