From 1e0e5577742baece8cc3aac3cf3da61a6b3276b0 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marek.vasut@gmail.com>
Date: Fri, 10 Sep 2021 22:47:16 +0200
Subject: [PATCH] lmb: sh: Add arch_lmb_reserve()

Add arch_lmb_reserve() implemented using arch_lmb_reserve_generic().
This architecture also needs to cover U-Boot with LMB before booting
Linux.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
---
 arch/sh/lib/bootm.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/sh/lib/bootm.c b/arch/sh/lib/bootm.c
index dc94f83785..9b71424dfe 100644
--- a/arch/sh/lib/bootm.c
+++ b/arch/sh/lib/bootm.c
@@ -12,8 +12,11 @@
 #include <env.h>
 #include <image.h>
 #include <asm/byteorder.h>
+#include <asm/global_data.h>
 #include <asm/zimage.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #ifdef CONFIG_SYS_DEBUG
 static void hexdump(unsigned char *buf, int len)
 {
@@ -111,3 +114,16 @@ int do_bootm_linux(int flag, int argc, char *const argv[],
 	/* does not return */
 	return 1;
 }
+
+static ulong get_sp(void)
+{
+	ulong ret;
+
+	asm("mov r15, %0" : "=r"(ret) : );
+	return ret;
+}
+
+void arch_lmb_reserve(struct lmb *lmb)
+{
+	arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 4096);
+}
-- 
2.39.5