From 55cfcbed53dc997ad669d3f8cd95fbe25b6e2aab Mon Sep 17 00:00:00 2001

From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>

Date: Wed, 24 Apr 2013 13:54:17 +0200

Subject: [PATCH 335/482] 	Move mips-arc link address. Previous link

 address was chosen 	in belief that RAM on SGI platforms grows down while

 in fact it 	grows up from an unusual base.

---

 ChangeLog                      |  6 ++++++

 grub-core/Makefile.core.def    |  6 +++---

 grub-core/kern/mips/arc/init.c | 14 +++++++++-----

 grub-core/kern/mips/startup.S  |  2 --

 include/grub/mips/arc/memory.h |  2 +-

 include/grub/offsets.h         |  2 +-

 util/grub-mkimage.c            | 11 ++++-------

 7 files changed, 24 insertions(+), 19 deletions(-)

diff --git a/ChangeLog b/ChangeLog

index 2150d3d..39bb827 100644

--- a/ChangeLog

+++ b/ChangeLog

@@ -1,3 +1,9 @@

+2013-04-24  Vladimir Serbinenko  <phcoder@gmail.com>

+

+	Move mips-arc link address. Previous link address was chosen

+	in belief that RAM on SGI platforms grows down while in fact it

+	grows up from an unusual base.

+

 2013-04-21  Vladimir Serbinenko  <phcoder@gmail.com>

 	* grub-core/disk/arc/arcdisk.c (grub_arcdisk_iterate_iter):

diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def

index 7269609..8f36ea0 100644

--- a/grub-core/Makefile.core.def

+++ b/grub-core/Makefile.core.def

@@ -73,7 +73,7 @@ kernel = {

   mips_loongson_ldflags    = '-Wl,-Ttext,0x80200000';

   powerpc_ieee1275_ldflags = '-Wl,-Ttext,0x200000';

   sparc64_ieee1275_ldflags = '-Wl,-Ttext,0x4400';

-  mips_arc_ldflags    = '-Wl,-Ttext,0x8bd00000';

+  mips_arc_ldflags    = '-Wl,-Ttext,0x88200000';

   mips_qemu_mips_ldflags    = '-Wl,-Ttext,0x80200000';

   mips_loongson_cppflags = '-DUSE_ASCII_FAILBACK';

@@ -372,7 +372,7 @@ image = {

   objcopyflags = '-O binary';

   mips_loongson_ldflags = '-static-libgcc -Wl,-Ttext,0x80100000';

   mips_qemu_mips_ldflags = '-static-libgcc -Wl,-Ttext,0x80100000';

-  mips_arc_ldflags = '-static-libgcc -Wl,-Ttext,0x8bc00000';

+  mips_arc_ldflags = '-static-libgcc -Wl,-Ttext,0x88100000';

   ldadd = '-lgcc';

   cflags = '-Wno-unreachable-code -static-libgcc';

   enable = mips;

@@ -388,7 +388,7 @@ image = {

   objcopyflags = '-O binary';

   mips_loongson_ldflags = '-static-libgcc -Wl,-Ttext,0x80100000';

   mips_qemu_mips_ldflags = '-static-libgcc -Wl,-Ttext,0x80100000';

-  mips_arc_ldflags = '-static-libgcc -Wl,-Ttext,0x8bc00000';

+  mips_arc_ldflags = '-static-libgcc -Wl,-Ttext,0x88100000';

   ldadd = '-lgcc';

   cflags = '-static-libgcc';

   enable = mips;

diff --git a/grub-core/kern/mips/arc/init.c b/grub-core/kern/mips/arc/init.c

index f63ac6d..011c63f 100644

--- a/grub-core/kern/mips/arc/init.c

+++ b/grub-core/kern/mips/arc/init.c

@@ -128,12 +128,16 @@ grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)

 extern grub_uint32_t grub_total_modules_size __attribute__ ((section(".text")));

 grub_addr_t grub_modbase;

+extern char _end[];

+

 void

 grub_machine_init (void)

 {

   struct grub_arc_memory_descriptor *cur = NULL;

+  grub_addr_t modend;

-  grub_modbase = GRUB_KERNEL_MIPS_ARC_LINK_ADDR - grub_total_modules_size;

+  grub_modbase = ALIGN_UP ((grub_addr_t) _end, GRUB_KERNEL_MACHINE_MOD_ALIGN);

+  modend = grub_modbase + grub_total_modules_size;

   grub_console_init_early ();

   /* FIXME: measure this.  */

@@ -153,10 +157,10 @@ grub_machine_init (void)

       start = ((grub_uint64_t) cur->start_page) << 12;

       end = ((grub_uint64_t) cur->num_pages)  << 12;

       end += start;

-      if ((grub_uint64_t) end > ((GRUB_KERNEL_MIPS_ARC_LINK_ADDR

-				  - grub_total_modules_size) & 0x1fffffff))

-	end = ((GRUB_KERNEL_MIPS_ARC_LINK_ADDR - grub_total_modules_size)

-	       & 0x1fffffff);

+      if ((grub_uint64_t) start < (modend & 0x1fffffff))

+	start = (modend & 0x1fffffff);

+      if ((grub_uint64_t) end > 0x20000000)

+	end = 0x20000000;

       if (end > start)

 	grub_mm_init_region ((void *) (grub_addr_t) (start | 0x80000000),

 			     end - start);

diff --git a/grub-core/kern/mips/startup.S b/grub-core/kern/mips/startup.S

index 2476038..35a11bc 100644

--- a/grub-core/kern/mips/startup.S

+++ b/grub-core/kern/mips/startup.S

@@ -73,7 +73,6 @@ cont:

 #endif

 	/* Move the modules out of BSS.  */

-#ifndef GRUB_MACHINE_ARC

 	lui $t2, %hi(__bss_start)

 	addiu $t2, %lo(__bss_start)

@@ -103,7 +102,6 @@ modulesmovcont:

 	b modulesmovcont

 	 addiu $t3, $t3, -1

 modulesmovdone:

-#endif

 	/* Clean BSS.  */

diff --git a/include/grub/mips/arc/memory.h b/include/grub/mips/arc/memory.h

index b960d2a..68b425f 100644

--- a/include/grub/mips/arc/memory.h

+++ b/include/grub/mips/arc/memory.h

@@ -19,7 +19,7 @@

 #ifndef GRUB_MEMORY_MACHINE_HEADER

 #define GRUB_MEMORY_MACHINE_HEADER	1

-#define GRUB_MACHINE_MEMORY_STACK_HIGH       0x8bfffff0

+#define GRUB_MACHINE_MEMORY_STACK_HIGH       0x881ffff0

 #ifndef ASM_FILE

diff --git a/include/grub/offsets.h b/include/grub/offsets.h

index bce755d..1e673d5 100644

--- a/include/grub/offsets.h

+++ b/include/grub/offsets.h

@@ -80,7 +80,7 @@

 #define GRUB_DECOMPRESSOR_MIPS_QEMU_MIPS_UNCOMPRESSED_ADDR        0x10

 #define GRUB_KERNEL_MIPS_QEMU_MIPS_TOTAL_MODULE_SIZE	0x08

-#define GRUB_KERNEL_MIPS_ARC_LINK_ADDR         0x8bd00000

+#define GRUB_KERNEL_MIPS_ARC_LINK_ADDR         0x88200000

 #define GRUB_KERNEL_MIPS_ARC_LINK_ALIGN  32

diff --git a/util/grub-mkimage.c b/util/grub-mkimage.c

index 0acc61e..41f795a 100644

--- a/util/grub-mkimage.c

+++ b/util/grub-mkimage.c

@@ -387,8 +387,7 @@ struct image_target_desc image_targets[] =

       .voidp_sizeof = 4,

       .bigendian = 1,

       .id = IMAGE_MIPS_ARC, 

-      .flags = (PLATFORM_FLAGS_DECOMPRESSORS

-		| PLATFORM_FLAGS_MODULES_BEFORE_KERNEL),

+      .flags = PLATFORM_FLAGS_DECOMPRESSORS,

       .total_module_size = GRUB_KERNEL_MIPS_ARC_TOTAL_MODULE_SIZE,

       .decompressor_compressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_COMPRESSED_SIZE,

       .decompressor_uncompressed_size = GRUB_DECOMPRESSOR_MIPS_LOONGSON_UNCOMPRESSED_SIZE,

@@ -1522,12 +1521,10 @@ generate_image (const char *dir, const char *prefix,

 	program_size = ALIGN_ADDR (core_size);

 	if (comp == COMPRESSION_NONE)

-	  target_addr = (image_target->link_addr 

-			 - total_module_size - decompress_size);

+	  target_addr = (image_target->link_addr - decompress_size);

 	else

-	  target_addr = (image_target->link_addr 

-			 - ALIGN_UP(total_module_size + core_size, 1048576)

-			 - (1 << 20));

+	  target_addr = ALIGN_UP (image_target->link_addr

+				  + kernel_size + total_module_size, 32);

 	ecoff_img = xmalloc (program_size + sizeof (*head) + sizeof (*section));

 	grub_memset (ecoff_img, 0, program_size + sizeof (*head) + sizeof (*section));

-- 

1.8.2.1