Add initial support for Freescale mx51evk board

The patch adds initial support for the Freescale mx51evk board.
Network (FEC) and SD controller (fsl_esdhc) are supported.

Signed-off-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Fred Fan <fanyefeng@gmail.com>

1 files changed, 406 insertions, 0 deletions

diff --git a/board/freescale/mx51evk/mx51evk.c b/board/freescale/mx51evk/mx51evk.c
new file mode 100644
index 0000000..df0e8ed
--- /dev/null
+++ b/board/freescale/mx51evk/mx51evk.c
@@ -0,0 +1,406 @@
+/*
+ * (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/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/mx51_pins.h>
+#include <asm/arch/iomux.h>
+#include <asm/errno.h>
+#include <i2c.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include "mx51evk.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static u32 system_rev;
+struct io_board_ctrl *mx51_io_board;
+
+#ifdef CONFIG_FSL_ESDHC
+struct fsl_esdhc_cfg esdhc_cfg[2] = {
+	{MMC_SDHC1_BASE_ADDR, 1, 1},
+	{MMC_SDHC2_BASE_ADDR, 1, 1},
+};
+#endif
+
+u32 get_board_rev(void)
+{
+	return system_rev;
+}
+
+static inline void set_board_rev(int rev)
+{
+	system_rev |= (rev & 0xF) << 8;
+}
+
+inline int is_soc_rev(int rev)
+{
+	return (system_rev & 0xFF) - rev;
+}
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = get_ram_size((long *)PHYS_SDRAM_1,
+			PHYS_SDRAM_1_SIZE);
+	return 0;
+}
+
+static void setup_iomux_uart(void)
+{
+	unsigned int pad = PAD_CTL_HYS_ENABLE | PAD_CTL_PKE_ENABLE |
+			PAD_CTL_PUE_PULL | PAD_CTL_DRV_HIGH;
+
+	mxc_request_iomux(MX51_PIN_UART1_RXD, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_UART1_RXD, pad | PAD_CTL_SRE_FAST);
+	mxc_request_iomux(MX51_PIN_UART1_TXD, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_UART1_TXD, pad | PAD_CTL_SRE_FAST);
+	mxc_request_iomux(MX51_PIN_UART1_RTS, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_UART1_RTS, pad);
+	mxc_request_iomux(MX51_PIN_UART1_CTS, IOMUX_CONFIG_ALT0);
+	mxc_iomux_set_pad(MX51_PIN_UART1_CTS, pad);
+}
+
+static void setup_expio(void)
+{
+	u32 reg;
+	struct weim *pweim = (struct weim *)WEIM_BASE_ADDR;
+	struct clkctl *pclkctl = (struct clkctl *)CCM_BASE_ADDR;
+
+	/* CS5 setup */
+	mxc_request_iomux(MX51_PIN_EIM_CS5, IOMUX_CONFIG_ALT0);
+	writel(0x00410089, &pweim[5].csgcr1);
+	writel(0x00000002, &pweim[5].csgcr2);
+
+	/* RWSC=50, RADVA=2, RADVN=6, OEA=0, OEN=0, RCSA=0, RCSN=0 */
+	writel(0x32260000, &pweim[5].csrcr1);
+
+	/* APR = 0 */
+	writel(0x00000000, &pweim[5].csrcr2);
+
+	/*
+	 * WAL=0, WBED=1, WWSC=50, WADVA=2, WADVN=6, WEA=0, WEN=0,
+	 * WCSA=0, WCSN=0
+	 */
+	writel(0x72080F00, &pweim[5].cswcr1);
+
+	mx51_io_board = (struct io_board_ctrl *)(CS5_BASE_ADDR +
+						IO_BOARD_OFFSET);
+	if ((readw(&mx51_io_board->id1) == 0xAAAA) &&
+		(readw(&mx51_io_board->id2) == 0x5555)) {
+		if (is_soc_rev(CHIP_REV_2_0) < 0) {
+			reg = readl(&pclkctl->cbcdr);
+			reg = (reg & (~0x70000)) | 0x30000;
+			writel(reg, &pclkctl->cbcdr);
+			/* make sure divider effective */
+			while (readl(&pclkctl->cdhipr) != 0)
+				;
+			writel(0x0, &pclkctl->ccdr);
+		}
+	} else {
+		/* CS1 */
+		writel(0x00410089, &pweim[1].csgcr1);
+		writel(0x00000002, &pweim[1].csgcr2);
+		/*  RWSC=50, RADVA=2, RADVN=6, OEA=0, OEN=0, RCSA=0, RCSN=0 */
+		writel(0x32260000, &pweim[1].csrcr1);
+		/* APR=0 */
+		writel(0x00000000, &pweim[1].csrcr2);
+		/*
+		 * WAL=0, WBED=1, WWSC=50, WADVA=2, WADVN=6, WEA=0,
+		 * WEN=0, WCSA=0, WCSN=0
+		 */
+		writel(0x72080F00, &pweim[1].cswcr1);
+		mx51_io_board = (struct io_board_ctrl *)(CS1_BASE_ADDR +
+						IO_BOARD_OFFSET);
+	}
+
+	/* Reset interrupt status reg */
+	writew(0x1F, &(mx51_io_board->int_rest));
+	writew(0x00, &(mx51_io_board->int_rest));
+	writew(0xFFFF, &(mx51_io_board->int_mask));
+
+	/* Reset the XUART and Ethernet controllers */
+	reg = readw(&(mx51_io_board->sw_reset));
+	reg |= 0x9;
+	writew(reg, &(mx51_io_board->sw_reset));
+	reg &= ~0x9;
+	writew(reg, &(mx51_io_board->sw_reset));
+}
+
+static void setup_iomux_fec(void)
+{
+	/*FEC_MDIO*/
+	mxc_request_iomux(MX51_PIN_EIM_EB2 , IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_EB2 , 0x1FD);
+
+	/*FEC_MDC*/
+	mxc_request_iomux(MX51_PIN_NANDF_CS3, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS3, 0x2004);
+
+	/* FEC RDATA[3] */
+	mxc_request_iomux(MX51_PIN_EIM_CS3, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_CS3, 0x180);
+
+	/* FEC RDATA[2] */
+	mxc_request_iomux(MX51_PIN_EIM_CS2, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_CS2, 0x180);
+
+	/* FEC RDATA[1] */
+	mxc_request_iomux(MX51_PIN_EIM_EB3, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_EB3, 0x180);
+
+	/* FEC RDATA[0] */
+	mxc_request_iomux(MX51_PIN_NANDF_D9, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D9, 0x2180);
+
+	/* FEC TDATA[3] */
+	mxc_request_iomux(MX51_PIN_NANDF_CS6, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS6, 0x2004);
+
+	/* FEC TDATA[2] */
+	mxc_request_iomux(MX51_PIN_NANDF_CS5, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS5, 0x2004);
+
+	/* FEC TDATA[1] */
+	mxc_request_iomux(MX51_PIN_NANDF_CS4, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS4, 0x2004);
+
+	/* FEC TDATA[0] */
+	mxc_request_iomux(MX51_PIN_NANDF_D8, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D8, 0x2004);
+
+	/* FEC TX_EN */
+	mxc_request_iomux(MX51_PIN_NANDF_CS7, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS7, 0x2004);
+
+	/* FEC TX_ER */
+	mxc_request_iomux(MX51_PIN_NANDF_CS2, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_CS2, 0x2004);
+
+	/* FEC TX_CLK */
+	mxc_request_iomux(MX51_PIN_NANDF_RDY_INT, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_RDY_INT, 0x2180);
+
+	/* FEC TX_COL */
+	mxc_request_iomux(MX51_PIN_NANDF_RB2, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_RB2, 0x2180);
+
+	/* FEC RX_CLK */
+	mxc_request_iomux(MX51_PIN_NANDF_RB3, IOMUX_CONFIG_ALT1);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_RB3, 0x2180);
+
+	/* FEC RX_CRS */
+	mxc_request_iomux(MX51_PIN_EIM_CS5, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_CS5, 0x180);
+
+	/* FEC RX_ER */
+	mxc_request_iomux(MX51_PIN_EIM_CS4, IOMUX_CONFIG_ALT3);
+	mxc_iomux_set_pad(MX51_PIN_EIM_CS4, 0x180);
+
+	/* FEC RX_DV */
+	mxc_request_iomux(MX51_PIN_NANDF_D11, IOMUX_CONFIG_ALT2);
+	mxc_iomux_set_pad(MX51_PIN_NANDF_D11, 0x2180);
+}
+
+#ifdef CONFIG_FSL_ESDHC
+int board_mmc_getcd(u8 *cd, struct mmc *mmc)
+{
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+
+	if (cfg->esdhc_base == MMC_SDHC1_BASE_ADDR)
+		*cd = readl(GPIO1_BASE_ADDR) & 0x01;
+	else
+		*cd = readl(GPIO1_BASE_ADDR) & 0x40;
+
+	return 0;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	u32 index;
+	s32 status = 0;
+
+	for (index = 0; index < CONFIG_SYS_FSL_ESDHC_NUM;
+			index++) {
+		switch (index) {
+		case 0:
+			mxc_request_iomux(MX51_PIN_SD1_CMD,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_request_iomux(MX51_PIN_SD1_CLK,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_request_iomux(MX51_PIN_SD1_DATA0,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_request_iomux(MX51_PIN_SD1_DATA1,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_request_iomux(MX51_PIN_SD1_DATA2,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_request_iomux(MX51_PIN_SD1_DATA3,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_iomux_set_pad(MX51_PIN_SD1_CMD,
+				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+				PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
+				PAD_CTL_PUE_PULL |
+				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD1_CLK,
+				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+				PAD_CTL_HYS_NONE | PAD_CTL_47K_PU |
+				PAD_CTL_PUE_PULL |
+				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD1_DATA0,
+				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+				PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
+				PAD_CTL_PUE_PULL |
+				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD1_DATA1,
+				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+				PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
+				PAD_CTL_PUE_PULL |
+				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD1_DATA2,
+				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+				PAD_CTL_HYS_ENABLE | PAD_CTL_47K_PU |
+				PAD_CTL_PUE_PULL |
+				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD1_DATA3,
+				PAD_CTL_DRV_MAX | PAD_CTL_DRV_VOT_HIGH |
+				PAD_CTL_HYS_ENABLE | PAD_CTL_100K_PD |
+				PAD_CTL_PUE_PULL |
+				PAD_CTL_PKE_ENABLE | PAD_CTL_SRE_FAST);
+			mxc_request_iomux(MX51_PIN_GPIO1_0,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_iomux_set_pad(MX51_PIN_GPIO1_0,
+				PAD_CTL_HYS_ENABLE);
+			mxc_request_iomux(MX51_PIN_GPIO1_1,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_iomux_set_pad(MX51_PIN_GPIO1_1,
+				PAD_CTL_HYS_ENABLE);
+			break;
+		case 1:
+			mxc_request_iomux(MX51_PIN_SD2_CMD,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_request_iomux(MX51_PIN_SD2_CLK,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_request_iomux(MX51_PIN_SD2_DATA0,
+				IOMUX_CONFIG_ALT0);
+			mxc_request_iomux(MX51_PIN_SD2_DATA1,
+				IOMUX_CONFIG_ALT0);
+			mxc_request_iomux(MX51_PIN_SD2_DATA2,
+				IOMUX_CONFIG_ALT0);
+			mxc_request_iomux(MX51_PIN_SD2_DATA3,
+				IOMUX_CONFIG_ALT0);
+			mxc_iomux_set_pad(MX51_PIN_SD2_CMD,
+				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
+				PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD2_CLK,
+				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
+				PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD2_DATA0,
+				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
+				PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD2_DATA1,
+				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
+				PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD2_DATA2,
+				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
+				PAD_CTL_SRE_FAST);
+			mxc_iomux_set_pad(MX51_PIN_SD2_DATA3,
+				PAD_CTL_DRV_MAX | PAD_CTL_22K_PU |
+				PAD_CTL_SRE_FAST);
+			mxc_request_iomux(MX51_PIN_SD2_CMD,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_request_iomux(MX51_PIN_GPIO1_6,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_iomux_set_pad(MX51_PIN_GPIO1_6,
+				PAD_CTL_HYS_ENABLE);
+			mxc_request_iomux(MX51_PIN_GPIO1_5,
+				IOMUX_CONFIG_ALT0 | IOMUX_CONFIG_SION);
+			mxc_iomux_set_pad(MX51_PIN_GPIO1_5,
+				PAD_CTL_HYS_ENABLE);
+			break;
+		default:
+			printf("Warning: you configured more ESDHC controller"
+				"(%d) as supported by the board(2)\n",
+				CONFIG_SYS_FSL_ESDHC_NUM);
+			return status;
+		}
+		status |= fsl_esdhc_initialize(bis, &esdhc_cfg[index]);
+	}
+	return status;
+}
+#endif
+
+int board_init(void)
+{
+	system_rev = get_cpu_rev();
+
+	gd->bd->bi_arch_number = MACH_TYPE_MX51_BABBAGE;
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	setup_iomux_uart();
+	setup_expio();
+	setup_iomux_fec();
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: MX51EVK ");
+
+	switch (system_rev & 0xff) {
+	case CHIP_REV_3_0:
+		puts("3.0 [");
+		break;
+	case CHIP_REV_2_5:
+		puts("2.5 [");
+		break;
+	case CHIP_REV_2_0:
+		puts("2.0 [");
+		break;
+	case CHIP_REV_1_1:
+		puts("1.1 [");
+		break;
+	case CHIP_REV_1_0:
+	default:
+		puts("1.0 [");
+		break;
+	}
+
+	switch (__raw_readl(SRC_BASE_ADDR + 0x8)) {
+	case 0x0001:
+		puts("POR");
+		break;
+	case 0x0009:
+		puts("RST");
+		break;
+	case 0x0010:
+	case 0x0011:
+		puts("WDOG");
+		break;
+	default:
+		puts("unknown");
+	}
+	puts("]\n");
+	return 0;
+}
+