Add support for Bluewater Systems Snapper 9260/9G20 modules

Add support for Bluewater Systems AT91 based Snapper 9260 and 9G20
single board computer modules. Includes NAND flash and Ethernet
support.

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>

1 files changed, 169 insertions, 0 deletions

diff --git a/board/bluewater/snapper9260/snapper9260.c b/board/bluewater/snapper9260/snapper9260.c
new file mode 100644
index 0000000000..60c55e9be8
--- /dev/null
+++ b/board/bluewater/snapper9260/snapper9260.c
@@ -0,0 +1,169 @@
+/*
+ * Bluewater Systems Snapper 9260/9G20 modules
+ *
+ * (C) Copyright 2011 Bluewater Systems
+ *   Author: Andre Renaud <andre@bluewatersys.com>
+ *   Author: Ryan Mallon <ryan@bluewatersys.com>
+ *
+ * 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/at91sam9260_matrix.h>
+#include <asm/arch/at91sam9_smc.h>
+#include <asm/arch/at91_common.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
+#include <asm/arch/gpio.h>
+#include <net.h>
+#include <netdev.h>
+#include <i2c.h>
+#include <pca953x.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* IO Expander pins */
+#define IO_EXP_ETH_RESET	(0 << 1)
+#define IO_EXP_ETH_POWER	(1 << 1)
+
+static void macb_hw_init(void)
+{
+	struct at91_pmc *pmc   = (struct at91_pmc  *)ATMEL_BASE_PMC;
+	struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
+	struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC;
+	unsigned long erstl;
+
+	/* Enable clock */
+	writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
+
+	/* Disable pull-ups to prevent PHY going into test mode */
+	writel(pin_to_mask(AT91_PIN_PA14) |
+	       pin_to_mask(AT91_PIN_PA15) |
+	       pin_to_mask(AT91_PIN_PA18),
+	       &pioa->pudr);
+
+	/* Power down ethernet */
+	pca953x_set_dir(0x28, IO_EXP_ETH_POWER, PCA953X_DIR_OUT);
+	pca953x_set_val(0x28, IO_EXP_ETH_POWER, 1);
+
+	/* Hold ethernet in reset */
+	pca953x_set_dir(0x28, IO_EXP_ETH_RESET, PCA953X_DIR_OUT);
+	pca953x_set_val(0x28, IO_EXP_ETH_RESET, 0);
+
+	/* Enable ethernet power */
+	pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);
+
+	/* Need to reset PHY -> 500ms reset */
+	erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK;
+	writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) |
+	       AT91_RSTC_MR_URSTEN, &rstc->mr);
+	writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr);
+
+	/* Wait for end hardware reset */
+	while (!(readl(&rstc->sr) & AT91_RSTC_SR_NRSTL))
+		;
+
+	/* Restore NRST value */
+	writel(AT91_RSTC_KEY | erstl | AT91_RSTC_MR_URSTEN, &rstc->mr);
+
+	/* Bring the ethernet out of reset */
+	pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);
+
+	/* The phy internal reset take 21ms */
+	udelay(21 * 1000);
+
+	/* Re-enable pull-up */
+	writel(pin_to_mask(AT91_PIN_PA14) |
+	       pin_to_mask(AT91_PIN_PA15) |
+	       pin_to_mask(AT91_PIN_PA18),
+	       &pioa->puer);
+
+	at91_macb_hw_init();
+}
+
+static void nand_hw_init(void)
+{
+	struct at91_smc *smc       = (struct at91_smc    *)ATMEL_BASE_SMC;
+	struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
+	unsigned long csa;
+
+	/* Enable CS3 as NAND/SmartMedia */
+	csa = readl(&matrix->ebicsa);
+	csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
+	writel(csa, &matrix->ebicsa);
+
+	/* 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);
+	writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
+	       AT91_SMC_MODE_EXNW_DISABLE |
+	       AT91_SMC_MODE_DBW_8 |
+	       AT91_SMC_MODE_TDF_CYCLE(3),
+	       &smc->cs[3].mode);
+
+	/* Configure RDY/BSY */
+	at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
+
+	/* Enable NandFlash */
+	at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
+}
+
+int board_init(void)
+{
+	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+	/* Enable PIO clocks */
+	writel((1 << ATMEL_ID_PIOA) |
+	       (1 << ATMEL_ID_PIOB) |
+	       (1 << ATMEL_ID_PIOC), &pmc->pcer);
+
+	/* The mach-type is the same for both Snapper 9260 and 9G20 */
+	gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
+
+	/* Address of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+	/* Initialise peripherals */
+	at91_seriald_hw_init();
+	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+	nand_hw_init();
+	macb_hw_init();
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
+}
+
+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)
+{
+}