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/errno.h>
29 #include <asm/arch/imx-regs.h>
30 #include <asm/arch/clock.h>
31 #include <asm/arch/sys_proto.h>
32 #include <asm/arch/crm_regs.h>
33 #include <ipu_pixfmt.h>
35 #ifdef CONFIG_FSL_ESDHC
36 #include <fsl_esdhc.h>
39 char *get_reset_cause(void)
42 struct src *src_regs = (struct src *)SRC_BASE_ADDR;
44 cause = readl(&src_regs->srsr);
45 writel(cause, &src_regs->srsr);
64 return "unknown reset";
68 #if defined(CONFIG_DISPLAY_CPUINFO)
70 static const char *get_imx_type(u32 imxtype)
74 return "6Q"; /* Quad-core version of the mx6 */
76 return "6DS"; /* Dual/Solo version of the mx6 */
78 return "6SL"; /* Solo-Lite version of the mx6 */
88 int print_cpuinfo(void)
92 cpurev = get_cpu_rev();
94 printf("CPU: Freescale i.MX%s rev%d.%d at %d MHz\n",
95 get_imx_type((cpurev & 0xFF000) >> 12),
96 (cpurev & 0x000F0) >> 4,
97 (cpurev & 0x0000F) >> 0,
98 mxc_get_clock(MXC_ARM_CLK) / 1000000);
99 printf("Reset cause: %s\n", get_reset_cause());
104 int cpu_eth_init(bd_t *bis)
108 #if defined(CONFIG_FEC_MXC)
109 rc = fecmxc_initialize(bis);
115 #ifdef CONFIG_FSL_ESDHC
117 * Initializes on-chip MMC controllers.
118 * to override, implement board_mmc_init()
120 int cpu_mmc_init(bd_t *bis)
122 return fsl_esdhc_mmc_init(bis);
126 void reset_cpu(ulong addr)
128 __raw_writew(4, WDOG1_BASE_ADDR);
131 u32 get_ahb_clk(void)
133 struct mxc_ccm_reg *imx_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
136 reg = __raw_readl(&imx_ccm->cbcdr);
137 reg &= MXC_CCM_CBCDR_AHB_PODF_MASK;
138 ahb_podf = reg >> MXC_CCM_CBCDR_AHB_PODF_OFFSET;
140 return get_periph_clk() / (ahb_podf + 1);
143 #if defined(CONFIG_VIDEO_IPUV3)
144 void arch_preboot_os(void)
146 /* disable video before launching O/S */