arm: at91: Add support for gurnard

This board is based on Snapper 9G45 which has an Atmel AT91SAM9G45 chip and
128MB of SDRAM. It includes a small LCD, 2xUSB host, SD card, Ethernet and
two UARTs.

Signed-off-by: Andre Renaud <andre@designa-electronics.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
[apply CONFIG_BOOTDELAY transition]
Signed-off-by: Andreas Bießmann <andreas@biessmann.org>

1 files changed, 449 insertions, 0 deletions

diff --git a/board/bluewater/gurnard/gurnard.c b/board/bluewater/gurnard/gurnard.c
new file mode 100644
index 0000000..2a36d29
--- /dev/null
+++ b/board/bluewater/gurnard/gurnard.c
@@ -0,0 +1,449 @@
+/*
+ * Bluewater Systems Snapper 9260/9G20 modules
+ *
+ * (C) Copyright 2011 Bluewater Systems
+ *   Author: Andre Renaud <andre@bluewatersys.com>
+ *   Author: Ryan Mallon <ryan@bluewatersys.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <atmel_lcd.h>
+#include <atmel_lcdc.h>
+#include <atmel_mci.h>
+#include <dm.h>
+#include <lcd.h>
+#include <net.h>
+#ifndef CONFIG_DM_ETH
+#include <netdev.h>
+#endif
+#include <spi.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/arch/at91sam9g45_matrix.h>
+#include <asm/arch/at91sam9_smc.h>
+#include <asm/arch/at91_common.h>
+#include <asm/arch/at91_emac.h>
+#include <asm/arch/at91_rstc.h>
+#include <asm/arch/at91_rtc.h>
+#include <asm/arch/at91_sck.h>
+#include <asm/arch/atmel_serial.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/gpio.h>
+#include <dm/uclass-internal.h>
+
+#ifdef CONFIG_GURNARD_SPLASH
+#include "splash_logo.h"
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* IO Expander pins */
+#define IO_EXP_ETH_RESET	(0 << 1)
+#define IO_EXP_ETH_POWER	(1 << 1)
+
+#ifdef CONFIG_MACB
+static void gurnard_macb_hw_init(void)
+{
+	struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
+
+	at91_periph_clk_enable(ATMEL_ID_EMAC);
+
+	/*
+	 * Enable pull-up on:
+	 *	RXDV (PA12) => MODE0 - PHY also has pull-up
+	 *	ERX0 (PA13) => MODE1 - PHY also has pull-up
+	 *	ERX1 (PA15) => MODE2 - PHY also has pull-up
+	 */
+	writel(pin_to_mask(AT91_PIN_PA15) |
+	       pin_to_mask(AT91_PIN_PA12) |
+	       pin_to_mask(AT91_PIN_PA13),
+	       &pioa->puer);
+
+	at91_phy_reset();
+
+	at91_macb_hw_init();
+}
+#endif
+
+#ifdef CONFIG_CMD_NAND
+static int gurnard_nand_hw_init(void)
+{
+	struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
+	struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
+	ulong flags;
+	int ret;
+
+	/* Enable CS3 as NAND/SmartMedia */
+	setbits_le32(&matrix->ebicsa, AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA);
+
+	/* Configure SMC CS3 for NAND/SmartMedia */
+	writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
+	       AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
+	       &smc->cs[3].setup);
+	writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
+	       AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
+	       &smc->cs[3].pulse);
+	writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
+	       &smc->cs[3].cycle);
+#ifdef CONFIG_SYS_NAND_DBW_16
+	flags = AT91_SMC_MODE_DBW_16;
+#else
+	flags = AT91_SMC_MODE_DBW_8;
+#endif
+	writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
+	       AT91_SMC_MODE_EXNW_DISABLE |
+	       flags |
+	       AT91_SMC_MODE_TDF_CYCLE(3),
+	       &smc->cs[3].mode);
+
+	ret = gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand_rdy");
+	if (ret)
+		return ret;
+	gpio_direction_input(CONFIG_SYS_NAND_READY_PIN);
+
+	/* Enable NandFlash */
+	ret = gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand_ce");
+	if (ret)
+		return ret;
+	gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_GURNARD_SPLASH
+static void lcd_splash(int width, int height)
+{
+	u16 colour;
+	int x, y;
+	u16 *base_addr = (u16 *)gd->video_bottom;
+
+	memset(base_addr, 0xff, width * height * 2);
+	/*
+	 * Blit the logo to the center of the screen
+	 */
+	for (y = 0; y < BMP_LOGO_HEIGHT; y++) {
+		for (x = 0; x < BMP_LOGO_WIDTH; x++) {
+			int posx, posy;
+			colour = bmp_logo_palette[bmp_logo_bitmap[
+			    y * BMP_LOGO_WIDTH + x]];
+			posx = x + (width - BMP_LOGO_WIDTH) / 2;
+			posy = y;
+			base_addr[posy * width + posx] = colour;
+		}
+	}
+}
+#endif
+
+#ifdef CONFIG_DM_VIDEO
+static void at91sam9g45_lcd_hw_init(void)
+{
+	at91_set_A_periph(AT91_PIN_PE0, 0);	/* LCDDPWR */
+	at91_set_A_periph(AT91_PIN_PE2, 0);	/* LCDCC */
+	at91_set_A_periph(AT91_PIN_PE3, 0);	/* LCDVSYNC */
+	at91_set_A_periph(AT91_PIN_PE4, 0);	/* LCDHSYNC */
+	at91_set_A_periph(AT91_PIN_PE5, 0);	/* LCDDOTCK */
+
+	at91_set_A_periph(AT91_PIN_PE7, 0);	/* LCDD0 */
+	at91_set_A_periph(AT91_PIN_PE8, 0);	/* LCDD1 */
+	at91_set_A_periph(AT91_PIN_PE9, 0);	/* LCDD2 */
+	at91_set_A_periph(AT91_PIN_PE10, 0);	/* LCDD3 */
+	at91_set_A_periph(AT91_PIN_PE11, 0);	/* LCDD4 */
+	at91_set_A_periph(AT91_PIN_PE12, 0);	/* LCDD5 */
+	at91_set_A_periph(AT91_PIN_PE13, 0);	/* LCDD6 */
+	at91_set_A_periph(AT91_PIN_PE14, 0);	/* LCDD7 */
+	at91_set_A_periph(AT91_PIN_PE15, 0);	/* LCDD8 */
+	at91_set_A_periph(AT91_PIN_PE16, 0);	/* LCDD9 */
+	at91_set_A_periph(AT91_PIN_PE17, 0);	/* LCDD10 */
+	at91_set_A_periph(AT91_PIN_PE18, 0);	/* LCDD11 */
+	at91_set_A_periph(AT91_PIN_PE19, 0);	/* LCDD12 */
+	at91_set_B_periph(AT91_PIN_PE20, 0);	/* LCDD13 */
+	at91_set_A_periph(AT91_PIN_PE21, 0);	/* LCDD14 */
+	at91_set_A_periph(AT91_PIN_PE22, 0);	/* LCDD15 */
+	at91_set_A_periph(AT91_PIN_PE23, 0);	/* LCDD16 */
+	at91_set_A_periph(AT91_PIN_PE24, 0);	/* LCDD17 */
+	at91_set_A_periph(AT91_PIN_PE25, 0);	/* LCDD18 */
+	at91_set_A_periph(AT91_PIN_PE26, 0);	/* LCDD19 */
+	at91_set_A_periph(AT91_PIN_PE27, 0);	/* LCDD20 */
+	at91_set_B_periph(AT91_PIN_PE28, 0);	/* LCDD21 */
+	at91_set_A_periph(AT91_PIN_PE29, 0);	/* LCDD22 */
+	at91_set_A_periph(AT91_PIN_PE30, 0);	/* LCDD23 */
+
+	at91_periph_clk_enable(ATMEL_ID_LCDC);
+}
+#endif
+
+#ifdef CONFIG_GURNARD_FPGA
+/**
+ * Initialise the memory bus settings so that we can talk to the
+ * memory mapped FPGA
+ */
+static int fpga_hw_init(void)
+{
+	struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
+	struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
+	int i;
+
+	setbits_le32(&matrix->ebicsa, AT91_MATRIX_EBI_CS1A_SDRAMC);
+
+	at91_set_a_periph(2, 4, 0); /* EBIA21 */
+	at91_set_a_periph(2, 5, 0); /* EBIA22 */
+	at91_set_a_periph(2, 6, 0); /* EBIA23 */
+	at91_set_a_periph(2, 7, 0); /* EBIA24 */
+	at91_set_a_periph(2, 12, 0); /* EBIA25 */
+	for (i = 15; i <= 31; i++) /* EBINWAIT & EBID16 - 31 */
+		at91_set_a_periph(2, i, 0);
+
+	/* configure SMC cs0 for FPGA access timing */
+	writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(2) |
+	       AT91_SMC_SETUP_NRD(0) | AT91_SMC_SETUP_NCS_RD(2),
+	       &smc->cs[0].setup);
+	writel(AT91_SMC_PULSE_NWE(5) | AT91_SMC_PULSE_NCS_WR(4) |
+	       AT91_SMC_PULSE_NRD(6) | AT91_SMC_PULSE_NCS_RD(4),
+	       &smc->cs[0].pulse);
+	writel(AT91_SMC_CYCLE_NWE(6) | AT91_SMC_CYCLE_NRD(6),
+	       &smc->cs[0].cycle);
+	writel(AT91_SMC_MODE_BAT |
+	       AT91_SMC_MODE_EXNW_DISABLE |
+	       AT91_SMC_MODE_DBW_32 |
+	       AT91_SMC_MODE_TDF |
+	       AT91_SMC_MODE_TDF_CYCLE(2),
+	       &smc->cs[0].mode);
+
+	/* Do a write to within EBI_CS1 to enable the SDCK */
+	writel(0, ATMEL_BASE_CS1);
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_CMD_USB
+
+#define USB0_ENABLE_PIN		AT91_PIN_PB22
+#define USB1_ENABLE_PIN		AT91_PIN_PB23
+
+void gurnard_usb_init(void)
+{
+	at91_set_gpio_output(USB0_ENABLE_PIN, 1);
+	at91_set_gpio_value(USB0_ENABLE_PIN, 0);
+	at91_set_gpio_output(USB1_ENABLE_PIN, 1);
+	at91_set_gpio_value(USB1_ENABLE_PIN, 0);
+}
+#endif
+
+#ifdef CONFIG_GENERIC_ATMEL_MCI
+int cpu_mmc_init(bd_t *bis)
+{
+	return atmel_mci_init((void *)ATMEL_BASE_MCI0);
+}
+#endif
+
+static void gurnard_enable_console(int enable)
+{
+	at91_set_gpio_output(AT91_PIN_PB14, 1);
+	at91_set_gpio_value(AT91_PIN_PB14, enable ? 0 : 1);
+}
+
+void at91sam9g45_slowclock_init(void)
+{
+	/*
+	 * On AT91SAM9G45 revC CPUs, the slow clock can be based on an
+	 * internal impreciseRC oscillator or an external 32kHz oscillator.
+	 * Switch to the latter.
+	 */
+	unsigned i, tmp;
+	ulong *reg = (ulong *)ATMEL_BASE_SCKCR;
+
+	tmp = readl(reg);
+	if ((tmp & AT91SAM9G45_SCKCR_OSCSEL) == AT91SAM9G45_SCKCR_OSCSEL_RC) {
+		timer_init();
+		tmp |= AT91SAM9G45_SCKCR_OSC32EN;
+		writel(tmp, reg);
+		for (i = 0; i < 1200; i++)
+			udelay(1000);
+		tmp |= AT91SAM9G45_SCKCR_OSCSEL_32;
+		writel(tmp, reg);
+		udelay(200);
+		tmp &= ~AT91SAM9G45_SCKCR_RCEN;
+		writel(tmp, reg);
+	}
+}
+
+int board_early_init_f(void)
+{
+	at91_seriald_hw_init();
+	gurnard_enable_console(1);
+
+	return 0;
+}
+
+int board_init(void)
+{
+	const char *rev_str;
+#ifdef CONFIG_CMD_NAND
+	int ret;
+#endif
+
+	at91_periph_clk_enable(ATMEL_ID_PIOA);
+	at91_periph_clk_enable(ATMEL_ID_PIOB);
+	at91_periph_clk_enable(ATMEL_ID_PIOC);
+	at91_periph_clk_enable(ATMEL_ID_PIODE);
+
+	at91sam9g45_slowclock_init();
+
+	/*
+	 * Clear the RTC IDR to disable all IRQs. Avoid issues when Linux
+	 * boots with spurious IRQs.
+	 */
+	writel(0xffffffff, AT91_RTC_IDR);
+
+	/* Make sure that the reset signal is attached properly */
+	setbits_le32(AT91_ASM_RSTC_MR, AT91_RSTC_KEY | AT91_RSTC_MR_URSTEN);
+
+	gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
+
+	/* Address of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+#ifdef CONFIG_CMD_NAND
+	ret = gurnard_nand_hw_init();
+	if (ret)
+		return ret;
+#endif
+#ifdef CONFIG_ATMEL_SPI
+	at91_spi0_hw_init(1 << 4);
+#endif
+
+#ifdef CONFIG_MACB
+	gurnard_macb_hw_init();
+#endif
+
+#ifdef CONFIG_GURNARD_FPGA
+	fpga_hw_init();
+#endif
+
+#ifdef CONFIG_CMD_USB
+	gurnard_usb_init();
+#endif
+
+#ifdef CONFIG_CMD_MMC
+	at91_set_A_periph(AT91_PIN_PA12, 0);
+	at91_set_gpio_output(AT91_PIN_PA8, 1);
+	at91_set_gpio_value(AT91_PIN_PA8, 0);
+	at91_mci_hw_init();
+#endif
+
+#ifdef CONFIG_DM_VIDEO
+	at91sam9g45_lcd_hw_init();
+	at91_set_A_periph(AT91_PIN_PE6, 1);	/* power up */
+
+	/* Select the second timing index for board rev 2 */
+	rev_str = getenv("board_rev");
+	if (rev_str && !strncmp(rev_str, "2", 1)) {
+		struct udevice *dev;
+
+		uclass_find_first_device(UCLASS_VIDEO, &dev);
+		if (dev) {
+			struct atmel_lcd_platdata *plat = dev_get_platdata(dev);
+
+			plat->timing_index = 1;
+		}
+	}
+#endif
+
+	return 0;
+}
+
+int board_late_init(void)
+{
+	u_int8_t env_enetaddr[8];
+	char *env_str;
+	char *end;
+	int i;
+
+	/*
+	 * Set MAC address so we do not need to init Ethernet before Linux
+	 * boot
+	 */
+	env_str = getenv("ethaddr");
+	if (env_str) {
+		struct at91_emac *emac = (struct at91_emac *)ATMEL_BASE_EMAC;
+		/* Parse MAC address */
+		for (i = 0; i < 6; i++) {
+			env_enetaddr[i] = env_str ?
+				simple_strtoul(env_str, &end, 16) : 0;
+			if (env_str)
+				env_str = (*end) ? end+1 : end;
+		}
+
+		/* Set hardware address */
+		writel(env_enetaddr[0] | env_enetaddr[1] << 8 |
+		       env_enetaddr[2] << 16 | env_enetaddr[3] << 24,
+		       &emac->sa2l);
+		writel((env_enetaddr[4] | env_enetaddr[5] << 8), &emac->sa2h);
+
+		printf("MAC:   %s\n", getenv("ethaddr"));
+	} else {
+		/* Not set in environment */
+		printf("MAC:   not set\n");
+	}
+#ifdef CONFIG_GURNARD_SPLASH
+	lcd_splash(480, 272);
+#endif
+
+	return 0;
+}
+
+#ifndef CONFIG_DM_ETH
+int board_eth_init(bd_t *bis)
+{
+	return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0);
+}
+#endif
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
+				    CONFIG_SYS_SDRAM_SIZE);
+	return 0;
+}
+
+void reset_phy(void)
+{
+}
+
+/* This breaks the Ethernet MAC at present */
+void enable_caches(void)
+{
+	dcache_enable();
+}
+
+/* SPI chip select control - only used for FPGA programming */
+#ifdef CONFIG_ATMEL_SPI
+
+int spi_cs_is_valid(unsigned int bus, unsigned int cs)
+{
+	return bus == 0 && cs == 0;
+}
+
+void spi_cs_activate(struct spi_slave *slave)
+{
+	/* We don't use chipselects for FPGA programming */
+}
+
+void spi_cs_deactivate(struct spi_slave *slave)
+{
+	/* We don't use chipselects for FPGA programming */
+}
+#endif /* CONFIG_ATMEL_SPI */
+
+static struct atmel_serial_platdata at91sam9260_serial_plat = {
+	.base_addr = ATMEL_BASE_DBGU,
+};
+
+U_BOOT_DEVICE(at91sam9260_serial) = {
+	.name	= "serial_atmel",
+	.platdata = &at91sam9260_serial_plat,
+};