x86: linked list of setup_data for i386

This patch adds linked list of struct setup_data supported for i386.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: andi@firstfloor.org
Cc: mingo@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/head.c

@@ -53,3 +53,21 @@ void __init reserve_ebda_region(void)
 	/* reserve all memory between lowmem and the 1MB mark */
 	reserve_early(lowmem, 0x100000, "BIOS reserved");
 }
+
+void __init reserve_setup_data(void)
+{
+	struct setup_data *data;
+	u64 pa_data;
+	char buf[32];
+
+	if (boot_params.hdr.version < 0x0209)
+		return;
+	pa_data = boot_params.hdr.setup_data;
+	while (pa_data) {
+		data = early_ioremap(pa_data, sizeof(*data));
+		sprintf(buf, "setup data %x", data->type);
+		reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf);
+		pa_data = data->next;
+		early_iounmap(data, sizeof(*data));
+	}
+}

arch/x86/kernel/head64.c

@@ -51,24 +51,6 @@ static void __init copy_bootdata(char *real_mode_data)
 	}
 }
 
-static void __init reserve_setup_data(void)
-{
-	struct setup_data *data;
-	unsigned long pa_data;
-	char buf[32];
-
-	if (boot_params.hdr.version < 0x0209)
-		return;
-	pa_data = boot_params.hdr.setup_data;
-	while (pa_data) {
-		data = early_ioremap(pa_data, sizeof(*data));
-		sprintf(buf, "setup data %x", data->type);
-		reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf);
-		pa_data = data->next;
-		early_iounmap(data, sizeof(*data));
-	}
-}
-
 void __init x86_64_start_kernel(char * real_mode_data)
 {
 	int i;

arch/x86/kernel/setup.c

@@ -137,3 +137,25 @@ void __init setup_per_cpu_areas(void)
 }
 
 #endif
+
+void __init parse_setup_data(void)
+{
+	struct setup_data *data;
+	u64 pa_data;
+
+	if (boot_params.hdr.version < 0x0209)
+		return;
+	pa_data = boot_params.hdr.setup_data;
+	while (pa_data) {
+		data = early_ioremap(pa_data, PAGE_SIZE);
+		switch (data->type) {
+		default:
+			break;
+		}
+#ifndef CONFIG_DEBUG_BOOT_PARAMS
+		free_early(pa_data, pa_data+sizeof(*data)+data->len);
+#endif
+		pa_data = data->next;
+		early_iounmap(data, PAGE_SIZE);
+	}
+}

arch/x86/kernel/setup_32.c

@@ -681,6 +681,7 @@ void __init setup_arch(char **cmdline_p)
 	pre_setup_arch_hook();
 	early_cpu_init();
 	early_ioremap_init();
+	reserve_setup_data();
 
 #ifdef CONFIG_EFI
 	if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
@@ -729,6 +730,8 @@ void __init setup_arch(char **cmdline_p)
 	bss_resource.start = virt_to_phys(&__bss_start);
 	bss_resource.end = virt_to_phys(&__bss_stop)-1;
 
+	parse_setup_data();
+
 	parse_early_param();
 
 	finish_e820_parsing();

arch/x86/kernel/setup_64.c

@@ -272,28 +272,6 @@ void __attribute__((weak)) __init memory_setup(void)
        machine_specific_memory_setup();
 }
 
-static void __init parse_setup_data(void)
-{
-	struct setup_data *data;
-	unsigned long pa_data;
-
-	if (boot_params.hdr.version < 0x0209)
-		return;
-	pa_data = boot_params.hdr.setup_data;
-	while (pa_data) {
-		data = early_ioremap(pa_data, PAGE_SIZE);
-		switch (data->type) {
-		default:
-			break;
-		}
-#ifndef CONFIG_DEBUG_BOOT_PARAMS
-		free_early(pa_data, pa_data+sizeof(*data)+data->len);
-#endif
-		pa_data = data->next;
-		early_iounmap(data, PAGE_SIZE);
-	}
-}
-
 #ifdef CONFIG_PCI_MMCONFIG
 extern void __cpuinit fam10h_check_enable_mmcfg(void);
 extern void __init check_enable_amd_mmconf_dmi(void);

include/asm-x86/bootparam.h

@@ -106,4 +106,7 @@ struct boot_params {
 	__u8  _pad9[276];				/* 0xeec */
 } __attribute__((packed));
 
+void reserve_setup_data(void);
+void parse_setup_data(void);
+
 #endif /* _ASM_BOOTPARAM_H */