From 2f330ad98dfb70c245b285d4d2d2a1fe5029fda8 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sat, 17 Apr 2021 13:33:54 -0500
Subject: [PATCH] sunxi: Enable support for SCP firmware on H3

Now that issues with the BROM have been sorted out, we can implement
PSCI system suspend on H3 by delegating to SCP firmware. Let's start by
including the firmware in the FIT image and starting the coprocessor if
valid firmware is loaded.

Signed-off-by: Samuel Holland <samuel@sholland.org>
---
 arch/arm/mach-sunxi/Kconfig | 1 +
 board/sunxi/board.c         | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 48e750d0702..a6d5de9e3bc 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -173,6 +173,7 @@ config SUNXI_RESUME_BASE
 
 config SUNXI_SCP_BASE
 	hex
+	default 0x00048000 if MACH_SUN8I_H3
 	default 0x00050000 if MACH_SUN50I || MACH_SUN50I_H5
 	default 0x00114000 if MACH_SUN50I_H6
 	default 0x0
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 39ecbe988f7..b83d21ef089 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -19,6 +19,7 @@
 #include <init.h>
 #include <log.h>
 #include <mmc.h>
+#include <remoteproc.h>
 #include <axp_pmic.h>
 #include <generic-phy.h>
 #include <phy-sun4i-usb.h>
@@ -851,6 +852,13 @@ int board_late_init(void)
 	usb_ether_init();
 #endif
 
+#ifdef CONFIG_REMOTEPROC_SUN6I_AR100
+	if (!rproc_load(0, CONFIG_SUNXI_SCP_BASE, 1)) {
+		puts("Starting SCP...\n");
+		rproc_start(0);
+	}
+#endif
+
 	return 0;
 }