sparc,sparc64: prepare vmlinux.lds.S for unification

This patch makes the two vmlinux.lds.S files identical
and serve as documentation for the changes in each file.

This mainly add stuffs to sparc32 that is otherwise only
used by sparc64 and thus it should have no effect.

Build tested only.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 79 insertions, 20 deletions

diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 5b7e69a..4bfbeff 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -1,27 +1,55 @@
-/* ld script to make SparcLinux kernel */
+/* ld script for sparc32/sparc64 kernel */
 
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/page.h>
 
+#ifdef CONFIG_SPARC32
+#define INITIAL_ADDRESS  0x10000 + SIZEOF_HEADERS
+#define TEXTSTART	0xf0004000
+
+#define SMP_CACHE_BYTES_SHIFT 5
+
+#else
+#define SMP_CACHE_BYTES_SHIFT 6
+#define INITIAL_ADDRESS 0x4000
+#define TEXTSTART      0x0000000000404000
+
+#endif
+
+#define SMP_CACHE_BYTES (1 << SMP_CACHE_BYTES_SHIFT)
+
+#ifdef CONFIG_SPARC32
 OUTPUT_FORMAT("elf32-sparc", "elf32-sparc", "elf32-sparc")
 OUTPUT_ARCH(sparc)
 ENTRY(_start)
 jiffies = jiffies_64 + 4;
+#else
+/* sparc64 */
+OUTPUT_FORMAT("elf64-sparc", "elf64-sparc", "elf64-sparc")
+OUTPUT_ARCH(sparc:v9a)
+ENTRY(_start)
+jiffies = jiffies_64;
+#endif
+
 SECTIONS
 {
-	. = 0x10000 + SIZEOF_HEADERS;
-	.text 0xf0004000 :
+	/* swapper_low_pmd_dir is sparc64 only */
+	swapper_low_pmd_dir = 0x0000000000402000;
+	. = INITIAL_ADDRESS;
+	.text TEXTSTART :
 	{
 		_text = .;
 		*(.text.head)
 		TEXT_TEXT
 		SCHED_TEXT
 		LOCK_TEXT
+		KPROBES_TEXT
 		*(.gnu.warning)
 	} = 0
 	_etext = .;
 	PROVIDE (etext = .);
-	RODATA
+
+	RO_DATA(PAGE_SIZE)
 	.data :	{
 		DATA_DATA
 		CONSTRUCTORS
@@ -29,25 +57,32 @@ SECTIONS
 	.data1 : {
 		*(.data1)
 	}
+	. = ALIGN(SMP_CACHE_BYTES);
+	.data.cacheline_aligned : {
+		*(.data.cacheline_aligned)
+	}
+	. = ALIGN(SMP_CACHE_BYTES);
+	.data.read_mostly : {
+		*(.data.read_mostly)
+	}
 	_edata = .;
 	PROVIDE (edata = .);
-
 	.fixup : {
 		__start___fixup = .;
 		*(.fixup)
 		__stop___fixup = .;
 	}
+	. = ALIGN(16);
 	__ex_table : {
 		__start___ex_table = .;
 		*(__ex_table)
 		__stop___ex_table = .;
 	}
-
 	NOTES
 
 	. = ALIGN(PAGE_SIZE);
-	__init_begin = .;
 	.init.text : {
+		__init_begin = .;
 		_sinittext = .;
 		INIT_TEXT
 		_einittext = .;
@@ -65,7 +100,7 @@ SECTIONS
 	.initcall.init : {
 		__initcall_start = .;
 		INITCALLS
-	__initcall_end = .;
+		__initcall_end = .;
 	}
 	.con_initcall.init : {
 		__con_initcall_start = .;
@@ -74,31 +109,54 @@ SECTIONS
 	}
 	SECURITY_INIT
 
+	. = ALIGN(4);
+	.tsb_ldquad_phys_patch : {
+		__tsb_ldquad_phys_patch = .;
+		*(.tsb_ldquad_phys_patch)
+		__tsb_ldquad_phys_patch_end = .;
+	}
+
+	.tsb_phys_patch : {
+		__tsb_phys_patch = .;
+		*(.tsb_phys_patch)
+		__tsb_phys_patch_end = .;
+	}
+
+	.cpuid_patch : {
+		__cpuid_patch = .;
+		*(.cpuid_patch)
+		__cpuid_patch_end = .;
+	}
+
+	.sun4v_1insn_patch : {
+		__sun4v_1insn_patch = .;
+		*(.sun4v_1insn_patch)
+		__sun4v_1insn_patch_end = .;
+	}
+	.sun4v_2insn_patch : {
+		__sun4v_2insn_patch = .;
+		*(.sun4v_2insn_patch)
+		__sun4v_2insn_patch_end = .;
+	}
+
 #ifdef CONFIG_BLK_DEV_INITRD
 	. = ALIGN(PAGE_SIZE);
 	.init.ramfs : {
-	__initramfs_start = .;
+		__initramfs_start = .;
 		*(.init.ramfs)
-	__initramfs_end = .;
+		__initramfs_end = .;
 	}
 #endif
 
 	PERCPU(PAGE_SIZE)
+
 	. = ALIGN(PAGE_SIZE);
 	__init_end = .;
-	. = ALIGN(32);
-	.data.cacheline_aligned : {
-		*(.data.cacheline_aligned)
-	}
-	. = ALIGN(32);
-	.data.read_mostly : {
-		*(.data.read_mostly)
-	}
-
 	__bss_start = .;
 	.sbss : {
 		*(.sbss)
-		*(.scommon) }
+		*(.scommon)
+	}
 	.bss : {
 		*(.dynbss)
 		*(.bss)
@@ -106,6 +164,7 @@ SECTIONS
 	}
 	_end = . ;
 	PROVIDE (end = .);
+
 	/DISCARD/ : {
 		EXIT_TEXT
 		EXIT_DATA