ARM: socfpga: Add initial support for the ABB SECU board

Add initial support for the ABB SECU board, which is an ArriaV-based
SoCFPGA system with ethernet and booting from Denali NAND.

Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>

1 files changed, 67 insertions, 0 deletions

diff --git a/board/keymile/secu1/socfpga.c b/board/keymile/secu1/socfpga.c
new file mode 100644
index 0000000000..dc04a21abe
--- /dev/null
+++ b/board/keymile/secu1/socfpga.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017-2020 ABB
+ */
+#include <common.h>
+#include <i2c.h>
+#include <asm/gpio.h>
+
+#include "../common/common.h"
+
+/*
+ * For FU1, the MAC address associated with the mgmt port should
+ * be the base address (as read from the IVM) + 4, and for FU2 it
+ * is + 10
+ */
+#define MAC_ADDRESS_OFFSET_FU1	4
+#define MAC_ADDRESS_OFFSET_FU2	10
+
+/*
+ * This function reads the state of GPIO40 and returns true (non-zero)
+ * if it is '1' and false(0) otherwise.
+ *
+ * This pin is routed to a pull-up on FU2 and a pull-down on
+ */
+#define GPIO_FU_DETECTION	40
+
+int secu1_is_fu2(void)
+{
+	int value;
+	int ret = gpio_request(GPIO_FU_DETECTION, "secu");
+
+	if (ret) {
+		printf("gpio: failed to request pin for FU  detection\n");
+		return 1;
+	}
+	gpio_direction_input(GPIO_FU_DETECTION);
+	value = gpio_get_value(GPIO_FU_DETECTION);
+
+	if (value == 1)
+		printf("FU2 detected\n");
+	else
+		printf("FU1 detected\n");
+
+	return value;
+}
+
+static uchar ivm_content[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
+
+#if defined(CONFIG_HUSH_INIT_VAR)
+int hush_init_var(void)
+{
+	ivm_analyze_eeprom(ivm_content, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
+	return 0;
+}
+#endif
+
+int misc_init_r(void)
+{
+	if (secu1_is_fu2())
+		ivm_read_eeprom(ivm_content, CONFIG_SYS_IVM_EEPROM_MAX_LEN,
+				MAC_ADDRESS_OFFSET_FU2);
+	else
+		ivm_read_eeprom(ivm_content, CONFIG_SYS_IVM_EEPROM_MAX_LEN,
+				MAC_ADDRESS_OFFSET_FU1);
+
+	return 0;
+}