From 9337dfb4342a7bf2164405cdcb9c92b857ea0974 Mon Sep 17 00:00:00 2001
From: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Date: Wed, 10 Jan 2018 11:34:38 +0100
Subject: [PATCH] db410c: use the device tree parsed by the lk loader.

We dont need to keep copies of the properties that we are going to
fixup since we will be using the dtb provided by the firmware.

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
---
 .../dragonboard410c/dragonboard410c.c         | 66 +++++++++++--------
 configs/dragonboard410c_defconfig             |  1 +
 2 files changed, 40 insertions(+), 27 deletions(-)

diff --git a/board/qualcomm/dragonboard410c/dragonboard410c.c b/board/qualcomm/dragonboard410c/dragonboard410c.c
index b9bf55ba31e..9a600952a6a 100644
--- a/board/qualcomm/dragonboard410c/dragonboard410c.c
+++ b/board/qualcomm/dragonboard410c/dragonboard410c.c
@@ -15,14 +15,22 @@
 DECLARE_GLOBAL_DATA_PTR;
 
 /* pointer to the device tree ammended by the firmware */
-extern const void *fw_dtb;
+extern void *fw_dtb;
 
-static char wlan_mac[ARP_HLEN];
-static char bt_mac[ARP_HLEN];
+void *board_fdt_blob_setup(void)
+{
+	if (fdt_magic(fw_dtb) != FDT_MAGIC) {
+		printf("Firmware provided invalid dtb!\n");
+		return NULL;
+	}
+
+	return fw_dtb;
+}
 
 int dram_init(void)
 {
 	gd->ram_size = PHYS_SDRAM_1_SIZE;
+
 	return 0;
 }
 
@@ -138,36 +146,40 @@ int misc_init_r(void)
 
 int board_init(void)
 {
-	int offset, len;
-	const char *mac;
-
-	/* take a copy of the firmware information (the user could unknownly
-	   overwrite that DDR via tftp or other means)  */
-
-	offset = fdt_node_offset_by_compatible(fw_dtb, -1, "qcom,wcnss-wlan");
-	if (offset >= 0) {
-		mac = fdt_getprop(fw_dtb, offset, "local-mac-address", &len);
-		if (mac)
-			memcpy(wlan_mac, mac, ARP_HLEN);
-	}
-
-	offset = fdt_node_offset_by_compatible(fw_dtb, -1, "qcom,wcnss-bt");
-	if (offset >= 0) {
-		mac = fdt_getprop(fw_dtb, offset, "local-bd-address", &len);
-		if (mac)
-			memcpy(bt_mac, mac, ARP_HLEN);
-	}
-
 	return 0;
 }
 
 int ft_board_setup(void *blob, bd_t *bd)
 {
-	do_fixup_by_compat(blob, "qcom,wcnss-wlan", "local-mac-address",
-			   wlan_mac, ARP_HLEN, 1);
+	int offset, len, i;
+	const char *mac;
+	struct {
+		const char *compatible;
+		const char *property;
+	} fix[] = {
+		[0] = {
+			/* update the kernel's dtb with wlan mac */
+			.compatible = "qcom,wcnss-wlan",
+			.property = "local-mac-address",
+		},
+		[1] = {
+			/* update the kernel's dtb with bt mac */
+			.compatible = "qcom,wcnss-bt",
+			.property = "local-bd-address",
+		},
+	};
 
-	do_fixup_by_compat(blob, "qcom,wcnss-bt", "local-bd-address",
-			   bt_mac, ARP_HLEN, 1);
+	for (i = 0; i < sizeof(fix) / sizeof(fix[0]); i++) {
+		offset = fdt_node_offset_by_compatible(gd->fdt_blob, -1,
+						       fix[i].compatible);
+		if (offset < 0)
+			continue;
+
+		mac = fdt_getprop(gd->fdt_blob, offset, fix[i].property, &len);
+		if (mac)
+			do_fixup_by_compat(blob, fix[i].compatible,
+					   fix[i].property, mac, ARP_HLEN, 1);
+	}
 
 	return 0;
 }
diff --git a/configs/dragonboard410c_defconfig b/configs/dragonboard410c_defconfig
index de923adbc3d..4389f52b5ce 100644
--- a/configs/dragonboard410c_defconfig
+++ b/configs/dragonboard410c_defconfig
@@ -47,3 +47,4 @@ CONFIG_OF_CONTROL=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_PSCI_RESET=y
+CONFIG_OF_SEPARATE=y