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author | Jason Liu <jason.hui@linaro.org> | 2011-11-25 00:18:01 +0000 |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-12-09 17:30:10 +0100 |
commit | 18936ee2ad8bf92f8219026b6b93fdcf58baeb61 (patch) | |
tree | 1b9eabdd084618a739ba3cc129bed04699fcd809 /arch/arm/cpu/armv7/imx-common/cpu.c | |
parent | 393cb36199d337c8554cc8dfc853f5f405f4742b (diff) | |
download | u-boot-imx-18936ee2ad8bf92f8219026b6b93fdcf58baeb61.zip u-boot-imx-18936ee2ad8bf92f8219026b6b93fdcf58baeb61.tar.gz u-boot-imx-18936ee2ad8bf92f8219026b6b93fdcf58baeb61.tar.bz2 |
i.mx: introduce the armv7/imx-common folder
In order to support the coming MX6 platform and to reducde
the duplicated code, we had better move some common files
or functions to the imx-common folder for sharing.
This patch does the following:
- move speed.c file from armv7/mx5/speed.c to armv7/imx-common/speed.c
- move armv7/mx5/timer.c to armv7/imx-common/timer.c, no any new feature
added but just fix the checkpatch errors in the old file and remove
the CONFIG_SYS_MX5_CLK32 reference in the file
- create one new file cpu.c file to store the common function with i.mx5/6
Signed-off-by: Jason Liu <jason.hui@linaro.org>
Cc:Stefano Babic <sbabic@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
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 0000000..1e30ae5 --- /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); +} |