1 files changed, 84 insertions, 0 deletions
diff --git a/arch/arm/boards/skov-arm9cpu/board.c b/arch/arm/boards/skov-arm9cpu/board.c
new file mode 100644
index 0000000000..8d5eadbb9a
--- /dev/null
+++ b/arch/arm/boards/skov-arm9cpu/board.c
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0+
+// SPDX-FileCopyrightText: 2017 Sam Ravnborg <sam@ravnborg.org>
+
+#include <common.h>
+#include <globalvar.h>
+#include <magicvar.h>
+#include <envfs.h>
+#include <init.h>
+#include <gpio.h>
+
+#include <linux/sizes.h>
+
+#include <mach/at91sam9263_matrix.h>
+#include <mach/at91sam9_sdramc.h>
+#include <mach/at91sam9_smc.h>
+#include <mach/hardware.h>
+#include <mach/iomux.h>
+
+static struct sam9_smc_config ek_nand_smc_config = {
+	.ncs_read_setup		= 0,
+	.nrd_setup		= 1,
+	.ncs_write_setup	= 0,
+	.nwe_setup		= 1,
+
+	.ncs_read_pulse		= 3,
+	.nrd_pulse		= 3,
+	.ncs_write_pulse	= 3,
+	.nwe_pulse		= 3,
+
+	.read_cycle		= 5,
+	.write_cycle		= 5,
+
+	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
+				  AT91_SMC_EXNWMODE_DISABLE,
+	.tdf_cycles		= 2,
+};
+
+BAREBOX_MAGICVAR(board.mem, "The detected memory size in MiB");
+
+static int mem;
+
+/*
+ * Initialize of SMC must come after we
+ * probe the at91sam9_smc_driver.
+ * But is required before we start the other drives.
+ * Use device_initcall() to maintain this order.
+ */
+static int skov_arm9_probe(struct device_d *dev)
+{
+	unsigned long csa;
+
+	add_generic_device("at91sam9-smc", 0, NULL, AT91SAM9263_BASE_SMC0, 0x200,
+			   IORESOURCE_MEM, NULL);
+	add_generic_device("at91sam9-smc", 1, NULL, AT91SAM9263_BASE_SMC1, 0x200,
+			   IORESOURCE_MEM, NULL);
+
+	csa = readl(AT91SAM9263_BASE_MATRIX + AT91SAM9263_MATRIX_EBI0CSA);
+	csa |= AT91SAM9263_MATRIX_EBI0_CS3A_SMC_SMARTMEDIA;
+	writel(csa, AT91SAM9263_BASE_MATRIX + AT91SAM9263_MATRIX_EBI0CSA);
+
+	/* configure chip-select 3 (NAND) */
+	sam9_smc_configure(0, 3, &ek_nand_smc_config);
+
+	mem = at91_get_sdram_size(IOMEM(AT91SAM9263_BASE_SDRAMC0));
+	mem = mem / SZ_1M;
+	globalvar_add_simple_int("board.mem", &mem, "%u");
+
+	return 0;
+}
+
+static __maybe_unused struct of_device_id skov_arm9_ids[] = {
+	{
+		.compatible = "skov,arm9-cpu",
+	}, {
+		/* sentinel */
+	}
+};
+
+static struct driver_d skov_arm9_driver = {
+	.name = "skov-arm9",
+	.probe = skov_arm9_probe,
+	.of_compatible = DRV_OF_COMPAT(skov_arm9_ids),
+};
+device_platform_driver(skov_arm9_driver);