add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/powerpc/platforms/chrp/nvram.c
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@@ -1,13 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  c 2001 PPC 64 Team, IBM Corp
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  *
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- *      This program is free software; you can redistribute it and/or
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- *      modify it under the terms of the GNU General Public License
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- *      as published by the Free Software Foundation; either version
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- *      2 of the License, or (at your option) any later version.
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- *
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  * /dev/nvram driver for PPC
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- *
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  */
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 #include <linux/kernel.h>
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@@ -24,7 +19,7 @@
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 static unsigned char nvram_buf[4];
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 static DEFINE_SPINLOCK(nvram_lock);
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-static unsigned char chrp_nvram_read(int addr)
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+static unsigned char chrp_nvram_read_val(int addr)
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 {
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 	unsigned int done;
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 	unsigned long flags;
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@@ -46,7 +41,7 @@
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 	return ret;
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 }
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-static void chrp_nvram_write(int addr, unsigned char val)
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+static void chrp_nvram_write_val(int addr, unsigned char val)
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 {
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 	unsigned int done;
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 	unsigned long flags;
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@@ -62,6 +57,11 @@
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 		       __pa(nvram_buf), 1) != 0) || 1 != done)
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 		printk(KERN_DEBUG "rtas IO error storing 0x%02x at %d", val, addr);
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 	spin_unlock_irqrestore(&nvram_lock, flags);
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+}
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+
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+static ssize_t chrp_nvram_size(void)
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+{
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+	return nvram_size;
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 }
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 void __init chrp_nvram_init(void)
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@@ -85,8 +85,9 @@
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 	printk(KERN_INFO "CHRP nvram contains %u bytes\n", nvram_size);
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 	of_node_put(nvram);
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-	ppc_md.nvram_read_val = chrp_nvram_read;
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-	ppc_md.nvram_write_val = chrp_nvram_write;
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+	ppc_md.nvram_read_val  = chrp_nvram_read_val;
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+	ppc_md.nvram_write_val = chrp_nvram_write_val;
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+	ppc_md.nvram_size      = chrp_nvram_size;
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 	return;
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 }