From 026ba130a5e8861259d12fb9ae352e9ce408955d Mon Sep 17 00:00:00 2001
From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Date: Mon, 5 Oct 2020 13:28:45 +0200
Subject: MIPS: alchemy: Share prom_init implementation

All boards have the same prom_init() function. Move it to common code and
delete the duplicates.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---
 arch/mips/alchemy/common/prom.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'arch/mips/alchemy/common')

diff --git a/arch/mips/alchemy/common/prom.c b/arch/mips/alchemy/common/prom.c
index af312b5e33f6..cfa203064d3c 100644
--- a/arch/mips/alchemy/common/prom.c
+++ b/arch/mips/alchemy/common/prom.c
@@ -34,6 +34,8 @@
  */
 
 #include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sizes.h>
 #include <linux/string.h>
 
 #include <asm/bootinfo.h>
@@ -76,6 +78,24 @@ char *prom_getenv(char *envname)
 	return NULL;
 }
 
+void __init prom_init(void)
+{
+	unsigned char *memsize_str;
+	unsigned long memsize;
+
+	prom_argc = (int)fw_arg0;
+	prom_argv = (char **)fw_arg1;
+	prom_envp = (char **)fw_arg2;
+
+	prom_init_cmdline();
+
+	memsize_str = prom_getenv("memsize");
+	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
+		memsize = SZ_64M; /* minimum memsize is 64MB RAM */
+
+	add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
+
 static inline unsigned char str2hexnum(unsigned char c)
 {
 	if (c >= '0' && c <= '9')
-- 
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