eukrea_cpuimx25: update board support

- support NAND external boot
- enable only used clocks
- LCD fix in /env/bin/init
- I2C support
- SDCard support
- USB Host 1 support
- DFU support on OTG port
- update defconfig

Signed-off-by: Eric Bénard <eric@eukrea.com>

4 files changed, 162 insertions, 20 deletions

diff --git a/arch/arm/boards/eukrea_cpuimx25/env/bin/init b/arch/arm/boards/eukrea_cpuimx25/env/bin/init
index 335d7ae579..47328759bc 100644
--- a/arch/arm/boards/eukrea_cpuimx25/env/bin/init
+++ b/arch/arm/boards/eukrea_cpuimx25/env/bin/init
@@ -14,9 +14,11 @@ fi
 
 if [ -f /env/logo.bmp ]; then
 	bmp /env/logo.bmp
+	fb0.enable=1
 elif [ -f /env/logo.bmp.lzo ]; then
 	unlzo /env/logo.bmp.lzo /logo.bmp
 	bmp /logo.bmp
+	fb0.enable=1
 fi
 
 if [ -z $eth0.ethaddr ]; then
diff --git a/arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c b/arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c
index 7fd1031171..c2eb398fb7 100644
--- a/arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c
+++ b/arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c
@@ -40,6 +40,8 @@
 #include <nand.h>
 #include <mach/imx-flash-header.h>
 #include <mach/iomux-mx25.h>
+#include <i2c/i2c.h>
+#include <usb/fsl_usb2.h>
 
 extern unsigned long _stext;
 extern void exception_vectors(void);
@@ -151,6 +153,70 @@ static struct device_d imxfb_dev = {
 	.platform_data	= &eukrea_cpuimx25_fb_data,
 };
 
+static struct device_d i2c_dev = {
+	.id	  = -1,
+	.name     = "i2c-imx",
+	.map_base = IMX_I2C1_BASE,
+};
+
+static struct device_d esdhc_dev = {
+	.name		= "imx-esdhc",
+	.map_base	= 0x53fb4000,
+};
+
+#ifdef CONFIG_USB
+
+#define MX35_H1_SIC_SHIFT	21
+#define MX35_H1_SIC_MASK	(0x3 << MX35_H1_SIC_SHIFT)
+#define MX35_H1_PM_BIT		(1 << 8)
+#define MX35_H1_IPPUE_UP_BIT	(1 << 7)
+#define MX35_H1_IPPUE_DOWN_BIT	(1 << 6)
+#define MX35_H1_TLL_BIT		(1 << 5)
+#define MX35_H1_USBTE_BIT	(1 << 4)
+#define MXC_EHCI_INTERFACE_SINGLE_UNI	(2 << 0)
+
+static void imx25_usb_init(void)
+{
+	unsigned int tmp;
+
+	/* Host 1 */
+	tmp = readl(IMX_OTG_BASE + 0x600);
+	tmp &= ~(MX35_H1_SIC_MASK | MX35_H1_PM_BIT | MX35_H1_TLL_BIT |
+		MX35_H1_USBTE_BIT | MX35_H1_IPPUE_DOWN_BIT | MX35_H1_IPPUE_UP_BIT);
+	tmp |= (MXC_EHCI_INTERFACE_SINGLE_UNI) << MX35_H1_SIC_SHIFT;
+	tmp |= MX35_H1_USBTE_BIT;
+	tmp |= MX35_H1_IPPUE_DOWN_BIT;
+	writel(tmp, IMX_OTG_BASE + 0x600);
+
+	tmp = readl(IMX_OTG_BASE + 0x584);
+	tmp |= 3 << 30;
+	writel(tmp, IMX_OTG_BASE + 0x584);
+
+	/* Set to Host mode */
+	tmp = readl(IMX_OTG_BASE + 0x5a8);
+	writel(tmp | 0x3, IMX_OTG_BASE + 0x5a8);
+}
+
+static struct device_d usbh2_dev = {
+	.id	  = -1,
+	.name     = "ehci",
+	.map_base = IMX_OTG_BASE + 0x400,
+	.size     = 0x200,
+};
+#endif
+
+static struct fsl_usb2_platform_data usb_pdata = {
+	.operating_mode	= FSL_USB2_DR_DEVICE,
+	.phy_mode	= FSL_USB2_PHY_UTMI,
+};
+
+static struct device_d usbotg_dev = {
+	.name     = "fsl-udc",
+	.map_base = IMX_OTG_BASE,
+	.size     = 0x200,
+	.platform_data = &usb_pdata,
+};
+
 #ifdef CONFIG_MMU
 static void eukrea_cpuimx25_mmu_init(void)
 {
@@ -209,6 +275,16 @@ static struct pad_desc eukrea_cpuimx25_pads[] = {
 	MX25_PAD_HSYNC__LCDC_HSYN,
 	/* BACKLIGHT CONTROL */
 	MX25_PAD_PWM__GPIO26,
+	/* I2C */
+	MX25_PAD_I2C1_CLK__SCL,
+	MX25_PAD_I2C1_DAT__SDA,
+	/* SDCard */
+	MX25_PAD_SD1_CLK__CLK,
+	MX25_PAD_SD1_CMD__CMD,
+	MX25_PAD_SD1_DATA0__DAT0,
+	MX25_PAD_SD1_DATA1__DAT1,
+	MX25_PAD_SD1_DATA2__DAT2,
+	MX25_PAD_SD1_DATA3__DAT3,
 };
 
 static int eukrea_cpuimx25_devices_init(void)
@@ -217,6 +293,7 @@ static int eukrea_cpuimx25_devices_init(void)
 
 	mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx25_pads,
 		ARRAY_SIZE(eukrea_cpuimx25_pads));
+
 	register_device(&fec_dev);
 
 	nand_info.width = 1;
@@ -238,6 +315,15 @@ static int eukrea_cpuimx25_devices_init(void)
 
 	register_device(&imxfb_dev);
 
+	register_device(&i2c_dev);
+	register_device(&esdhc_dev);
+
+#ifdef CONFIG_USB
+	imx25_usb_init();
+	register_device(&usbh2_dev);
+#endif
+	register_device(&usbotg_dev);
+
 	armlinux_add_dram(&sdram0_dev);
 	armlinux_set_bootparams((void *)0x80000100);
 	armlinux_set_architecture(MACH_TYPE_EUKREA_CPUIMX25);
@@ -256,7 +342,6 @@ static struct device_d eukrea_cpuimx25_serial_device = {
 
 static int eukrea_cpuimx25_console_init(void)
 {
-	writel(0x03010101, IMX_CCM_BASE + CCM_PCDR3);
 	register_device(&eukrea_cpuimx25_serial_device);
 	return 0;
 }
@@ -270,10 +355,17 @@ void __bare_init nand_boot(void)
 }
 #endif
 
-static int eukrea_cpuimx25_core_setup(void)
-{
-	writel(0x01010103, IMX_CCM_BASE + CCM_PCDR2);
-	return 0;
+static int eukrea_cpuimx25_core_init(void) {
+	/* enable UART1, FEC, SDHC, USB & I2C clock */
+	writel(readl(IMX_CCM_BASE + CCM_CGCR0) | (1 << 6) | (1 << 23)
+		| (1 << 15) | (1 << 21) | (1 << 3) | (1 << 28),
+		IMX_CCM_BASE + CCM_CGCR0);
+	writel(readl(IMX_CCM_BASE + CCM_CGCR1) | (1 << 23) | (1 << 15)
+		| (1 << 13), IMX_CCM_BASE + CCM_CGCR1);
+	writel(readl(IMX_CCM_BASE + CCM_CGCR2) | (1 << 14),
+		IMX_CCM_BASE + CCM_CGCR2);
 
+	return 0;
 }
-core_initcall(eukrea_cpuimx25_core_setup);
+
+core_initcall(eukrea_cpuimx25_core_init);
diff --git a/arch/arm/boards/eukrea_cpuimx25/lowlevel.c b/arch/arm/boards/eukrea_cpuimx25/lowlevel.c
index b9d3ce57bb..4ebf247776 100644
--- a/arch/arm/boards/eukrea_cpuimx25/lowlevel.c
+++ b/arch/arm/boards/eukrea_cpuimx25/lowlevel.c
@@ -26,13 +26,13 @@
 #include <mach/imx-regs.h>
 #include <mach/imx-pll.h>
 #include <mach/esdctl.h>
-#include <asm/cache-l2x0.h>
 #include <asm/io.h>
 #include <mach/imx-nand.h>
 #include <asm/barebox-arm.h>
 #include <asm-generic/memory_layout.h>
 #include <asm/system.h>
 
+#ifdef CONFIG_NAND_IMX_BOOT
 static void __bare_init __naked insdram(void)
 {
 	uint32_t r;
@@ -45,17 +45,32 @@ static void __bare_init __naked insdram(void)
 
 	board_init_lowlevel_return();
 }
-
-#define MX25_CCM_MCR	0x64
-#define MX25_CCM_CGR0	0x0c
-#define MX25_CCM_CGR1	0x10
-#define MX25_CCM_CGR2	0x14
+#endif
 
 void __bare_init __naked board_init_lowlevel(void)
 {
 	uint32_t r;
+#ifdef CONFIG_NAND_IMX_BOOT
 	unsigned int *trg, *src;
 	int i;
+#endif
+	register uint32_t loops = 0x20000;
+
+	/* restart the MPLL and wait until it's stable */
+	writel(readl(IMX_CCM_BASE + CCM_CCTL) | (1 << 27),
+						IMX_CCM_BASE + CCM_CCTL);
+	while (readl(IMX_CCM_BASE + CCM_CCTL) & (1 << 27)) {};
+
+	/* Configure dividers and ARM clock source
+	 * 	ARM @ 400 MHz
+	 * 	AHB @ 133 MHz
+	 */
+	writel(0x20034000, IMX_CCM_BASE + CCM_CCTL);
+
+	/* Enable UART1 / FEC / */
+/*	writel(0x1FFFFFFF, IMX_CCM_BASE + CCM_CGCR0);
+	writel(0xFFFFFFFF, IMX_CCM_BASE + CCM_CGCR1);
+	writel(0x000FDFFF, IMX_CCM_BASE + CCM_CGCR2);*/
 
 	/* AIPS setup - Only setup MPROTx registers. The PACR default values are good.
 	 * Set all MPROTx to be non-bufferable, trusted for R/W,
@@ -102,23 +117,46 @@ void __bare_init __naked board_init_lowlevel(void)
 	 */
 	writel(0x1, 0xb8003000);
 
-	/* enable all the clocks */
-	writel(0x038A81A2, IMX_CCM_BASE + MX25_CCM_CGR0);
-	writel(0x24788F00, IMX_CCM_BASE + MX25_CCM_CGR1);
-	writel(0x00004438, IMX_CCM_BASE + MX25_CCM_CGR2);
-	writel(0x00, IMX_CCM_BASE + MX25_CCM_MCR);
+	/* Speed up NAND controller by adjusting the NFC divider */
+	r = readl(IMX_CCM_BASE + CCM_PCDR2);
+	r &= ~0xf;
+	r |= 0x1;
+	writel(r, IMX_CCM_BASE + CCM_PCDR2);
+
+	/* Skip SDRAM initialization if we run from RAM */
+	r = get_pc();
+	if (r > 0x80000000 && r < 0x90000000)
+		board_init_lowlevel_return();
+
+	/* Init Mobile DDR */
+	writel(0x0000000E, ESDMISC);
+	writel(0x00000004, ESDMISC);
+	__asm__ volatile ("1:\n"
+			"subs %0, %1, #1\n"
+			"bne 1b":"=r" (loops):"0" (loops));
+
+	writel(0x0029572B, ESDCFG0);
+	writel(0x92210000, ESDCTL0);
+	writeb(0xda, IMX_SDRAM_CS0 + 0x400);
+	writel(0xA2210000, ESDCTL0);
+	writeb(0xda, IMX_SDRAM_CS0);
+	writeb(0xda, IMX_SDRAM_CS0);
+	writel(0xB2210000, ESDCTL0);
+	writeb(0xda, IMX_SDRAM_CS0 + 0x33);
+	writeb(0xda, IMX_SDRAM_CS0 + 0x1000000);
+	writel(0x82216080, ESDCTL0);
 
 #ifdef CONFIG_NAND_IMX_BOOT
 	/* skip NAND boot if not running from NFC space */
 	r = get_pc();
-	if (r < IMX_NFC_BASE || r > IMX_NFC_BASE + 0x1000)
+	if (r < IMX_NFC_BASE || r > IMX_NFC_BASE + 0x800)
 		board_init_lowlevel_return();
 
 	src = (unsigned int *)IMX_NFC_BASE;
 	trg = (unsigned int *)TEXT_BASE;
 
 	/* Move ourselves out of NFC SRAM */
-	for (i = 0; i < 0x1000 / sizeof(int); i++)
+	for (i = 0; i < 0x800 / sizeof(int); i++)
 		*trg++ = *src++;
 
 	/* Jump to SDRAM */
diff --git a/arch/arm/configs/eukrea_cpuimx25_defconfig b/arch/arm/configs/eukrea_cpuimx25_defconfig
index feb758e91d..bc68804d8c 100644
--- a/arch/arm/configs/eukrea_cpuimx25_defconfig
+++ b/arch/arm/configs/eukrea_cpuimx25_defconfig
@@ -9,6 +9,7 @@ CONFIG_LONGHELP=y
 CONFIG_GLOB=y
 CONFIG_PROMPT_HUSH_PS2="cpuimx25>"
 CONFIG_HUSH_FANCY_PROMPT=y
+CONFIG_HUSH_GETOPT=y
 CONFIG_CMDLINE_EDITING=y
 CONFIG_AUTO_COMPLETE=y
 CONFIG_PARTITION=y
@@ -23,6 +24,7 @@ CONFIG_CMD_READLINE=y
 CONFIG_CMD_ECHO_E=y
 CONFIG_CMD_MEMINFO=y
 CONFIG_CMD_CRC=y
+CONFIG_CMD_CRC_CMP=y
 CONFIG_CMD_MTEST=y
 CONFIG_CMD_FLASH=y
 CONFIG_CMD_BOOTM_ZLIB=y
@@ -35,15 +37,23 @@ CONFIG_CMD_PARTITION=y
 CONFIG_CMD_BMP=y
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_UNLZO=y
+CONFIG_CMD_I2C=y
 CONFIG_NET=y
 CONFIG_NET_DHCP=y
 CONFIG_NET_PING=y
 CONFIG_NET_TFTP=y
 CONFIG_DRIVER_NET_FEC_IMX=y
 # CONFIG_SPI is not set
+CONFIG_I2C=y
+CONFIG_I2C_IMX=y
 CONFIG_MTD=y
 CONFIG_NAND=y
 CONFIG_NAND_IMX=y
-CONFIG_NAND_IMX_BOOT=y
+CONFIG_USB=y
+CONFIG_USB_EHCI=y
+CONFIG_USB_GADGET=y
 CONFIG_VIDEO=y
 CONFIG_DRIVER_VIDEO_IMX=y
+CONFIG_MCI=y
+CONFIG_MCI_IMX_ESDHC=y
+CONFIG_MCI_IMX_ESDHC_PIO=y