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From 9abde0ff52268580501b3120629f3c92f0e5d589 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Thu, 10 Jan 2019 18:48:54 +0000
Subject: [PATCH] firmware: raspberrypi: Report the fw git hash during
 probe

The firmware can now report the git hash from which it was built
via the mailbox, so report it during probe.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
 drivers/firmware/raspberrypi.c             | 17 +++++++++++++++++
 include/soc/bcm2835/raspberrypi-firmware.h |  1 +
 2 files changed, 18 insertions(+)

--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -263,6 +263,22 @@ rpi_firmware_print_firmware_revision(str
 }
 
 static void
+rpi_firmware_print_firmware_hash(struct rpi_firmware *fw)
+{
+	u32 hash[5];
+	int ret = rpi_firmware_property(fw,
+					RPI_FIRMWARE_GET_FIRMWARE_HASH,
+					hash, sizeof(hash));
+
+	if (ret)
+		return;
+
+	dev_info(fw->cl.dev,
+		 "Firmware hash is %08x%08x%08x%08x%08x\n",
+		 hash[0], hash[1], hash[2], hash[3], hash[4]);
+}
+
+static void
 rpi_register_hwmon_driver(struct device *dev, struct rpi_firmware *fw)
 {
 	u32 packet;
@@ -308,6 +324,7 @@ static int rpi_firmware_probe(struct pla
 	g_pdev = pdev;
 
 	rpi_firmware_print_firmware_revision(fw);
+	rpi_firmware_print_firmware_hash(fw);
 	rpi_register_hwmon_driver(dev, fw);
 
 	return 0;
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -42,6 +42,7 @@ enum rpi_firmware_property_tag {
 	RPI_FIRMWARE_PROPERTY_END =                           0,
 	RPI_FIRMWARE_GET_FIRMWARE_REVISION =                  0x00000001,
 	RPI_FIRMWARE_GET_FIRMWARE_VARIANT =                   0x00000002,
+	RPI_FIRMWARE_GET_FIRMWARE_HASH =                      0x00000003,
 
 	RPI_FIRMWARE_SET_CURSOR_INFO =                        0x00008010,
 	RPI_FIRMWARE_SET_CURSOR_STATE =                       0x00008011,