修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/arch/mips/alchemy/common/prom.c
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@@ -34,6 +34,9 @@
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  */
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 #include <linux/init.h>
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+#include <linux/kernel.h>
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+#include <linux/memblock.h>
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+#include <linux/sizes.h>
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 #include <linux/string.h>
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 #include <asm/bootinfo.h>
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@@ -76,6 +79,24 @@
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 	return NULL;
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 }
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+void __init prom_init(void)
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+{
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+	unsigned char *memsize_str;
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+	unsigned long memsize;
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+
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+	prom_argc = (int)fw_arg0;
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+	prom_argv = (char **)fw_arg1;
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+	prom_envp = (char **)fw_arg2;
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+
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+	prom_init_cmdline();
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+
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+	memsize_str = prom_getenv("memsize");
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+	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
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+		memsize = SZ_64M; /* minimum memsize is 64MB RAM */
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+
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+	memblock_add(0, memsize);
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+}
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+
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 static inline unsigned char str2hexnum(unsigned char c)
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 {
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 	if (c >= '0' && c <= '9')