AT91SAM9261EK support

This patch adds support for the AT91SAM9261 chip and the AT91SAM9261EK
board.

Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 194 insertions, 0 deletions

diff --git a/board/atmel/at91sam9261ek/at91sam9261ek.c b/board/atmel/at91sam9261ek/at91sam9261ek.c
new file mode 100644
index 0000000..96b4422
--- /dev/null
+++ b/board/atmel/at91sam9261ek/at91sam9261ek.c
@@ -0,0 +1,194 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian.pop@leadtechdesign.com>
+ * Lead Tech Design <www.leadtechdesign.com>
+ *
+ * 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/arch/at91sam9261.h>
+#include <asm/arch/at91sam9261_matrix.h>
+#include <asm/arch/at91sam9_smc.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/io.h>
+#if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_DRIVER_DM9000)
+#include <net.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* ------------------------------------------------------------------------- */
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+static void at91sam9261ek_serial_hw_init(void)
+{
+#ifdef CONFIG_USART0
+	at91_set_A_periph(AT91_PIN_PC8, 1);		/* TXD0 */
+	at91_set_A_periph(AT91_PIN_PC9, 0);		/* RXD0 */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US0);
+#endif
+
+#ifdef CONFIG_USART1
+	at91_set_A_periph(AT91_PIN_PC12, 1);		/* TXD1 */
+	at91_set_A_periph(AT91_PIN_PC13, 0);		/* RXD1 */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US1);
+#endif
+
+#ifdef CONFIG_USART2
+	at91_set_A_periph(AT91_PIN_PC14, 1);		/* TXD2 */
+	at91_set_A_periph(AT91_PIN_PC15, 0);		/* RXD2 */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US2);
+#endif
+
+#ifdef CONFIG_USART3	/* DBGU */
+	at91_set_A_periph(AT91_PIN_PA9, 0);		/* DRXD */
+	at91_set_A_periph(AT91_PIN_PA10, 1);		/* DTXD */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
+#endif
+}
+
+#ifdef CONFIG_CMD_NAND
+static void at91sam9261ek_nand_hw_init(void)
+{
+	unsigned long csa;
+
+	/* Enable CS3 */
+	csa = at91_sys_read(AT91_MATRIX_EBICSA);
+	at91_sys_write(AT91_MATRIX_EBICSA,
+		       csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
+
+	/* Configure SMC CS3 for NAND/SmartMedia */
+	at91_sys_write(AT91_SMC_SETUP(3),
+		       AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) |
+		       AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
+	at91_sys_write(AT91_SMC_PULSE(3),
+		       AT91_SMC_NWEPULSE_(2) | AT91_SMC_NCS_WRPULSE_(5) |
+		       AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5));
+	at91_sys_write(AT91_SMC_CYCLE(3),
+		       AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7));
+	at91_sys_write(AT91_SMC_MODE(3),
+		       AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
+		       AT91_SMC_EXNWMODE_DISABLE |
+#ifdef CFG_NAND_DBW_16
+		       AT91_SMC_DBW_16 |
+#else /* CFG_NAND_DBW_8 */
+		       AT91_SMC_DBW_8 |
+#endif
+		       AT91_SMC_TDF_(1));
+
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_PIOC);
+
+	/* Configure RDY/BSY */
+	at91_set_gpio_input(AT91_PIN_PC15, 1);
+
+	/* Enable NandFlash */
+	at91_set_gpio_output(AT91_PIN_PC14, 1);
+
+	at91_set_A_periph(AT91_PIN_PC0, 0);	/* NANDOE */
+	at91_set_A_periph(AT91_PIN_PC1, 0);	/* NANDWE */
+}
+#endif
+
+#ifdef CONFIG_HAS_DATAFLASH
+static void at91sam9261ek_spi_hw_init(void)
+{
+	at91_set_A_periph(AT91_PIN_PA3, 0);	/* SPI0_NPCS0 */
+
+	at91_set_A_periph(AT91_PIN_PA0, 0);	/* SPI0_MISO */
+	at91_set_A_periph(AT91_PIN_PA1, 0);	/* SPI0_MOSI */
+	at91_set_A_periph(AT91_PIN_PA2, 0);	/* SPI0_SPCK */
+
+	/* Enable clock */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9261_ID_SPI0);
+}
+#endif
+
+#ifdef CONFIG_DRIVER_DM9000
+static void at91sam9261ek_dm9000_hw_init(void)
+{
+	/* Configure SMC CS2 for DM9000 */
+	at91_sys_write(AT91_SMC_SETUP(2),
+		       AT91_SMC_NWESETUP_(2) | AT91_SMC_NCS_WRSETUP_(0) |
+		       AT91_SMC_NRDSETUP_(2) | AT91_SMC_NCS_RDSETUP_(0));
+	at91_sys_write(AT91_SMC_PULSE(2),
+		       AT91_SMC_NWEPULSE_(4) | AT91_SMC_NCS_WRPULSE_(8) |
+		       AT91_SMC_NRDPULSE_(4) | AT91_SMC_NCS_RDPULSE_(8));
+	at91_sys_write(AT91_SMC_CYCLE(2),
+		       AT91_SMC_NWECYCLE_(16) | AT91_SMC_NRDCYCLE_(16));
+	at91_sys_write(AT91_SMC_MODE(2),
+		       AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
+		       AT91_SMC_EXNWMODE_DISABLE |
+		       AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16 |
+		       AT91_SMC_TDF_(1));
+
+	/* Configure Reset signal as output */
+	at91_set_gpio_output(AT91_PIN_PC10, 0);
+
+	/* Configure Interrupt pin as input, no pull-up */
+	at91_set_gpio_input(AT91_PIN_PC11, 0);
+}
+#endif
+
+int board_init(void)
+{
+	/* Enable Ctrlc */
+	console_init_f();
+
+	/* arch number of AT91SAM9261EK-Board */
+	gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9261EK;
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	at91sam9261ek_serial_hw_init();
+#ifdef CONFIG_CMD_NAND
+	at91sam9261ek_nand_hw_init();
+#endif
+#ifdef CONFIG_HAS_DATAFLASH
+	at91sam9261ek_spi_hw_init();
+#endif
+#ifdef CONFIG_DRIVER_DM9000
+	at91sam9261ek_dm9000_hw_init();
+#endif
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
+	return 0;
+}
+
+#ifdef CONFIG_RESET_PHY_R
+void reset_phy(void)
+{
+#ifdef CONFIG_DRIVER_DM9000
+	/*
+	 * Initialize ethernet HW addr prior to starting Linux,
+	 * needed for nfsroot
+	 */
+	eth_init(gd->bd);
+#endif
+}
+#endif