Connect NAND for the SAM9260EK eval board, as well as the HotE HL-201.

# expect more refinement as do more boards.

1 files changed, 51 insertions, 0 deletions

diff --git a/sys/arm/at91/board_hl201.c b/sys/arm/at91/board_hl201.c
index 8ba6980..66dbf36 100644
--- a/sys/arm/at91/board_hl201.c
+++ b/sys/arm/at91/board_hl201.c
@@ -34,6 +34,36 @@ __FBSDID("$FreeBSD$");
 #include <arm/at91/at91sam9g20reg.h>
 #include <arm/at91/at91_piovar.h>
 #include <arm/at91/at91_pio_sam9g20.h>
+#include <arm/at91/at91_smc.h>
+#include <arm/at91/at91_gpio.h>
+#include <dev/nand/nfc_at91.h>
+
+static struct at91_smc_init nand_smc = {
+	.ncs_rd_setup		= 0,
+	.nrd_setup		= 2,
+	.ncs_wr_setup		= 0,
+	.nwe_setup		= 2,
+
+	.ncs_rd_pulse		= 4,
+	.nrd_pulse		= 4,
+	.ncs_wr_pulse		= 4,
+	.nwe_pulse		= 4,
+
+	.nrd_cycle		= 7,
+	.nwe_cycle		= 7,
+
+	.mode			= SMC_MODE_READ | SMC_MODE_WRITE | SMC_MODE_EXNW_DISABLED,
+	.tdf_cycles		= 3,
+};
+
+static struct at91_nand_params nand_param = {
+	.ale			= 1u << 21,
+	.cle			= 1u << 22,
+	.width			= 8,
+	.rnb_pin		= AT91_PIN_PC13,	/* Note: These pins not confirmed */
+	.nce_pin		= AT91_PIN_PC14,
+	.cs			= 3,
+};
 
 BOARD_INIT long
 board_init(void)
@@ -64,6 +94,27 @@ board_init(void)
 	at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE, AT91C_PIO_PA24, 0);	/* ETX3 */
 	at91_pio_use_periph_b(AT91SAM9G20_PIOA_BASE, AT91C_PIO_PA22, 0);	/* ETXER */
 
+	/* Setup Static Memory Controller */
+	at91_smc_setup(0, 3, &nand_smc);
+	at91_enable_nand(&nand_param);
+
+	/*
+	 * This assumes
+	 *  - RNB is on pin PC13
+	 *  - CE is on pin PC14
+	 *
+	 * Nothing actually uses RNB right now.
+	 *
+	 * For CE, this currently asserts it during board setup and leaves it
+	 * that way forever.
+	 *
+	 * All this can go away when the gpio pin-renumbering happens...
+	 */
+	at91_pio_use_gpio(AT91SAM9G20_PIOC_BASE, AT91C_PIO_PC13 | AT91C_PIO_PC14);
+	at91_pio_gpio_input(AT91SAM9G20_PIOC_BASE, AT91C_PIO_PC13);	/* RNB */
+	at91_pio_gpio_output(AT91SAM9G20_PIOC_BASE, AT91C_PIO_PC14, 0);	/* nCS */
+	at91_pio_gpio_clear(AT91SAM9G20_PIOC_BASE, AT91C_PIO_PC14);	/* Assert nCS */
+
 	return (at91_ramsize());
 }