[brcm63xx] register gpiochip earlier, allowing gpio-based runtime detection to be...
[openwrt/svn-archive/archive.git] / target / linux / brcm63xx / files / arch / mips / bcm63xx / prom.c
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 */
8
9 #include <linux/init.h>
10 #include <linux/bootmem.h>
11 #include <asm/bootinfo.h>
12 #include <bcm63xx_board.h>
13 #include <bcm63xx_cpu.h>
14 #include <bcm63xx_io.h>
15 #include <bcm63xx_regs.h>
16 #include <bcm63xx_gpio.h>
17
18 void __init prom_init(void)
19 {
20 u32 reg, mask;
21
22 bcm63xx_cpu_init();
23
24 /* stop any running watchdog */
25 bcm_wdt_writel(WDT_STOP_1, WDT_CTL_REG);
26 bcm_wdt_writel(WDT_STOP_2, WDT_CTL_REG);
27
28 /* disable all hardware blocks clock for now */
29 if (BCMCPU_IS_6338())
30 mask = CKCTL_6338_ALL_SAFE_EN;
31 else if (BCMCPU_IS_6345())
32 mask = CKCTL_6345_UART_EN;
33 else if (BCMCPU_IS_6348())
34 mask = CKCTL_6348_ALL_SAFE_EN;
35 else
36 /* BCMCPU_IS_6358() */
37 mask = CKCTL_6358_ALL_SAFE_EN;
38
39 reg = bcm_perf_readl(PERF_CKCTL_REG);
40 reg &= ~mask;
41 bcm_perf_writel(reg, PERF_CKCTL_REG);
42
43 /* assign command line from kernel config */
44 strcpy(arcs_cmdline, CONFIG_CMDLINE);
45
46 /* register gpiochip */
47 bcm63xx_gpio_init();
48
49 /* do low level board init */
50 board_prom_init();
51 }
52
53 void __init prom_free_prom_memory(void)
54 {
55 }