From 756c01422dfa193097aa3d43c083b8b23e4b2301 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Tue, 6 Sep 2022 20:27:10 -0600
Subject: sandbox: Support setting up the other FDT for testing

Provide a way to copy over the 'other' FDT when running tests. This loads
it and allocates memory for the copy, if not done already, then does the
copy.

Avoid using U-Boot's malloc() pool for these copies, at least for now,
since they are part of the test system.

Tidy up the cpu.c header files while here.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 arch/sandbox/cpu/cpu.c | 34 +++++++++++++++++++++++++++++++---
 1 file changed, 31 insertions(+), 3 deletions(-)

(limited to 'arch/sandbox/cpu/cpu.c')

diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c
index d077948dd7b..636d3545b95 100644
--- a/arch/sandbox/cpu/cpu.c
+++ b/arch/sandbox/cpu/cpu.c
@@ -3,19 +3,22 @@
  * Copyright (c) 2011 The Chromium OS Authors.
  */
 
+#define LOG_CATEGORY	LOGC_SANDBOX
+
 #include <common.h>
 #include <bootstage.h>
 #include <cpu_func.h>
 #include <errno.h>
 #include <log.h>
-#include <asm/global_data.h>
-#include <linux/delay.h>
-#include <linux/libfdt.h>
 #include <os.h>
+#include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/malloc.h>
 #include <asm/setjmp.h>
 #include <asm/state.h>
+#include <dm/ofnode.h>
+#include <linux/delay.h>
+#include <linux/libfdt.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -373,3 +376,28 @@ ulong timer_get_boot_us(void)
 
 	return (count - base_count) / 1000;
 }
+
+int sandbox_load_other_fdt(void **fdtp, int *sizep)
+{
+	const char *orig;
+	int ret, size;
+	void *fdt = *fdtp;
+
+	ret = state_load_other_fdt(&orig, &size);
+	if (ret) {
+		log_err("Cannot read other FDT\n");
+		return log_msg_ret("ld", ret);
+	}
+
+	if (!*fdtp) {
+		fdt = os_malloc(size);
+		if (!fdt)
+			return log_msg_ret("mem", -ENOMEM);
+		*sizep = size;
+	}
+
+	memcpy(fdt, orig, *sizep);
+	*fdtp = fdt;
+
+	return 0;
+}
-- 
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