From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/arch/m68k/kernel/setup_mm.c | 90 +++++++++++++++++++++++++++++++++++++++++---
1 files changed, 83 insertions(+), 7 deletions(-)
diff --git a/kernel/arch/m68k/kernel/setup_mm.c b/kernel/arch/m68k/kernel/setup_mm.c
index de44899..f811666 100644
--- a/kernel/arch/m68k/kernel/setup_mm.c
+++ b/kernel/arch/m68k/kernel/setup_mm.c
@@ -10,6 +10,7 @@
*/
#include <linux/kernel.h>
+#include <linux/cpu.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/delay.h>
@@ -20,11 +21,11 @@
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/init.h>
-#include <linux/bootmem.h>
#include <linux/memblock.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/module.h>
+#include <linux/nvram.h>
#include <linux/initrd.h>
#include <asm/bootinfo.h>
@@ -38,13 +39,14 @@
#ifdef CONFIG_AMIGA
#include <asm/amigahw.h>
#endif
-#ifdef CONFIG_ATARI
#include <asm/atarihw.h>
+#ifdef CONFIG_ATARI
#include <asm/atari_stram.h>
#endif
#ifdef CONFIG_SUN3X
#include <asm/dvma.h>
#endif
+#include <asm/macintosh.h>
#include <asm/natfeat.h>
#if !FPSTATESIZE || !NR_IRQS
@@ -272,10 +274,6 @@
memcpy(boot_command_line, *cmdline_p, CL_SIZE);
parse_early_param();
-
-#ifdef CONFIG_DUMMY_CONSOLE
- conswitchp = &dummy_con;
-#endif
switch (m68k_machtype) {
#ifdef CONFIG_AMIGA
@@ -526,7 +524,7 @@
module_init(proc_hardware_init);
#endif
-void check_bugs(void)
+void __init arch_cpu_finalize_init(void)
{
#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
if (m68k_fputype == 0) {
@@ -548,3 +546,81 @@
__setup("adb_sync", adb_probe_sync_enable);
#endif /* CONFIG_ADB */
+
+#if IS_ENABLED(CONFIG_NVRAM)
+#ifdef CONFIG_MAC
+static unsigned char m68k_nvram_read_byte(int addr)
+{
+ if (MACH_IS_MAC)
+ return mac_pram_read_byte(addr);
+ return 0xff;
+}
+
+static void m68k_nvram_write_byte(unsigned char val, int addr)
+{
+ if (MACH_IS_MAC)
+ mac_pram_write_byte(val, addr);
+}
+#endif /* CONFIG_MAC */
+
+#ifdef CONFIG_ATARI
+static ssize_t m68k_nvram_read(char *buf, size_t count, loff_t *ppos)
+{
+ if (MACH_IS_ATARI)
+ return atari_nvram_read(buf, count, ppos);
+ else if (MACH_IS_MAC)
+ return nvram_read_bytes(buf, count, ppos);
+ return -EINVAL;
+}
+
+static ssize_t m68k_nvram_write(char *buf, size_t count, loff_t *ppos)
+{
+ if (MACH_IS_ATARI)
+ return atari_nvram_write(buf, count, ppos);
+ else if (MACH_IS_MAC)
+ return nvram_write_bytes(buf, count, ppos);
+ return -EINVAL;
+}
+
+static long m68k_nvram_set_checksum(void)
+{
+ if (MACH_IS_ATARI)
+ return atari_nvram_set_checksum();
+ return -EINVAL;
+}
+
+static long m68k_nvram_initialize(void)
+{
+ if (MACH_IS_ATARI)
+ return atari_nvram_initialize();
+ return -EINVAL;
+}
+#endif /* CONFIG_ATARI */
+
+static ssize_t m68k_nvram_get_size(void)
+{
+ if (MACH_IS_ATARI)
+ return atari_nvram_get_size();
+ else if (MACH_IS_MAC)
+ return mac_pram_get_size();
+ return -ENODEV;
+}
+
+/* Atari device drivers call .read (to get checksum validation) whereas
+ * Mac and PowerMac device drivers just use .read_byte.
+ */
+const struct nvram_ops arch_nvram_ops = {
+#ifdef CONFIG_MAC
+ .read_byte = m68k_nvram_read_byte,
+ .write_byte = m68k_nvram_write_byte,
+#endif
+#ifdef CONFIG_ATARI
+ .read = m68k_nvram_read,
+ .write = m68k_nvram_write,
+ .set_checksum = m68k_nvram_set_checksum,
+ .initialize = m68k_nvram_initialize,
+#endif
+ .get_size = m68k_nvram_get_size,
+};
+EXPORT_SYMBOL(arch_nvram_ops);
+#endif /* CONFIG_NVRAM */
--
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