3 * Sascha Hauer, Pengutronix
5 * (C) Copyright 2009 Freescale Semiconductor, Inc.
7 * See file CREDITS for list of people who contributed to this
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/arch/imx-regs.h>
28 #include <asm/arch/clock.h>
29 #include <asm/arch/sys_proto.h>
31 #include <asm/errno.h>
34 #if !(defined(CONFIG_MX51) || defined(CONFIG_MX53))
35 #error "CPU_TYPE not defined"
38 #ifdef CONFIG_HW_WATCHDOG
39 #define wdog_base ((void *)WDOG1_BASE_ADDR)
41 #define WCR_WDE (1 << 2)
44 void hw_watchdog_reset(void)
46 if (readw(wdog_base + WDOG_WCR) & WCR_WDE) {
47 static u16 toggle = 0xaaaa;
49 writew(toggle, wdog_base + WDOG_WSR);
58 int system_rev = 0x51000;
60 int system_rev = 0x53000;
62 int reg = __raw_readl(ROM_SI_REV);
64 #if defined(CONFIG_MX51)
67 system_rev |= CHIP_REV_1_1;
70 if ((__raw_readl(GPIO1_BASE_ADDR + 0x0) & (0x1 << 22)) == 0)
71 system_rev |= CHIP_REV_2_5;
73 system_rev |= CHIP_REV_2_0;
76 system_rev |= CHIP_REV_3_0;
79 system_rev |= CHIP_REV_1_0;
84 system_rev |= CHIP_REV_1_0;
91 #if defined(CONFIG_FEC_MXC)
92 static void __imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
95 struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
96 struct fuse_bank *bank = &iim->bank[1];
97 struct fuse_bank1_regs *fuse =
98 (struct fuse_bank1_regs *)bank->fuse_regs;
100 for (i = 0; i < 6; i++)
101 mac[i] = readl(&fuse->mac_addr[i]) & 0xff;
104 void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
105 __attribute__((weak, alias("__imx_get_mac_from_fuse")));
109 void set_chipselect_size(int const cs_size)
112 struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
113 reg = readl(&iomuxc_regs->gpr1);
117 reg &= ~0x7; /* CS0=128MB, CS1=0, CS2=0, CS3=0 */
120 case CS0_64M_CS1_64M:
121 reg &= ~0x3F; /* CS0=64MB, CS1=64MB, CS2=0, CS3=0 */
124 case CS0_64M_CS1_32M_CS2_32M:
125 reg &= ~0x1FF; /* CS0=64MB, CS1=32MB, CS2=32MB, CS3=0 */
128 case CS0_32M_CS1_32M_CS2_32M_CS3_32M:
129 reg &= ~0xFFF; /* CS0=32MB, CS1=32MB, CS2=32MB, CS3=32MB */
133 printf("Unknown chip select size: %d\n", cs_size);
137 writel(reg, &iomuxc_regs->gpr1);
140 void enable_caches(void)
142 #ifndef CONFIG_SYS_DCACHE_OFF
143 /* Enable D-cache. I-cache is already enabled in start.S */