diff options
Diffstat (limited to 'arch/arm/cpu/armv7/imx-common/cpu.c')
| -rw-r--r-- | arch/arm/cpu/armv7/imx-common/cpu.c | 108 | 
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/imx-common/cpu.c b/arch/arm/cpu/armv7/imx-common/cpu.c new file mode 100644 index 000000000..1e30ae501 --- /dev/null +++ b/arch/arm/cpu/armv7/imx-common/cpu.c @@ -0,0 +1,108 @@ +/* + * (C) Copyright 2007 + * Sascha Hauer, Pengutronix + * + * (C) Copyright 2009 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/errno.h> +#include <asm/io.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> + +#ifdef CONFIG_FSL_ESDHC +#include <fsl_esdhc.h> +#endif + +static char *get_reset_cause(void) +{ +	u32 cause; +	struct src *src_regs = (struct src *)SRC_BASE_ADDR; + +	cause = readl(&src_regs->srsr); +	writel(cause, &src_regs->srsr); + +	switch (cause) { +	case 0x00001: +		return "POR"; +	case 0x00004: +		return "CSU"; +	case 0x00008: +		return "IPP USER"; +	case 0x00010: +		return "WDOG"; +	case 0x00020: +		return "JTAG HIGH-Z"; +	case 0x00040: +		return "JTAG SW"; +	case 0x10000: +		return "WARM BOOT"; +	default: +		return "unknown reset"; +	} +} + +#if defined(CONFIG_DISPLAY_CPUINFO) +int print_cpuinfo(void) +{ +	u32 cpurev; + +	cpurev = get_cpu_rev(); +	printf("CPU:   Freescale i.MX%x family rev%d.%d at %d MHz\n", +		(cpurev & 0xFF000) >> 12, +		(cpurev & 0x000F0) >> 4, +		(cpurev & 0x0000F) >> 0, +		mxc_get_clock(MXC_ARM_CLK) / 1000000); +	printf("Reset cause: %s\n", get_reset_cause()); +	return 0; +} +#endif + +int cpu_eth_init(bd_t *bis) +{ +	int rc = -ENODEV; + +#if defined(CONFIG_FEC_MXC) +	rc = fecmxc_initialize(bis); +#endif + +	return rc; +} + +/* + * Initializes on-chip MMC controllers. + * to override, implement board_mmc_init() + */ +int cpu_mmc_init(bd_t *bis) +{ +#ifdef CONFIG_FSL_ESDHC +	return fsl_esdhc_mmc_init(bis); +#else +	return 0; +#endif +} + +void reset_cpu(ulong addr) +{ +	__raw_writew(4, WDOG1_BASE_ADDR); +}  |