[PATCH 10/14] lmb: sh: Add arch_lmb_reserve()
Marek Vasut
marek.vasut at gmail.com
Sun Aug 15 20:13:10 CEST 2021
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 at gmail.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
Cc: Tom Rini <trini at 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);
+}
--
2.30.2
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