[2022] 2009-03-08 Robert Millan <[email protected]>

Revision: 2022
          http://svn.sv.gnu.org/viewvc/?view=rev&root=grub&revision=2022
Author:   robertmh
Date:     2009-03-08 12:46:27 +0000 (Sun, 08 Mar 2009)
Log Message:
-----------
2009-03-08  Robert Millan  <[email protected]>

        Make loader/i386/linux.c usable on i386-pc again.

        * kern/i386/pc/init.c (grub_machine_init): Disable addition of low
        memory to heap.
        * loader/i386/linux.c [GRUB_MACHINE_PCBIOS] (allocate_pages): Remove
        `#error' stanza.

Modified Paths:
--------------
    trunk/grub2/ChangeLog
    trunk/grub2/kern/i386/pc/init.c
    trunk/grub2/loader/i386/linux.c

Modified: trunk/grub2/ChangeLog
===================================================================
--- trunk/grub2/ChangeLog	2009-03-07 10:50:43 UTC (rev 2021)
+++ trunk/grub2/ChangeLog	2009-03-08 12:46:27 UTC (rev 2022)
@@ -1,3 +1,12 @@
+2009-03-08  Robert Millan  <[email protected]>
+
+	Make loader/i386/linux.c usable on i386-pc again.
+
+	* kern/i386/pc/init.c (grub_machine_init): Disable addition of low
+	memory to heap.
+	* loader/i386/linux.c [GRUB_MACHINE_PCBIOS] (allocate_pages): Remove
+	`#error' stanza.
+
 2009-03-07  Bean  <[email protected]>
 
 	* loader/i386/efi/linux.c (grub_rescue_cmd_initrd): Fix a bug in initrd

Modified: trunk/grub2/kern/i386/pc/init.c
===================================================================
--- trunk/grub2/kern/i386/pc/init.c	2009-03-07 10:50:43 UTC (rev 2021)
+++ trunk/grub2/kern/i386/pc/init.c	2009-03-08 12:46:27 UTC (rev 2022)
@@ -148,10 +148,15 @@
   grub_gate_a20 (1);
 #endif
 
+/* FIXME: This prevents loader/i386/linux.c from using low memory.  When our
+   heap implements support for requesting a chunk in low memory, this should
+   no longer be a problem.  */
+#if 0
   /* Add the lower memory into free memory.  */
   if (grub_lower_mem >= GRUB_MEMORY_MACHINE_RESERVED_END)
     add_mem_region (GRUB_MEMORY_MACHINE_RESERVED_END,
 		    grub_lower_mem - GRUB_MEMORY_MACHINE_RESERVED_END);
+#endif
   
   auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
   int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)

Modified: trunk/grub2/loader/i386/linux.c
===================================================================
--- trunk/grub2/loader/i386/linux.c	2009-03-07 10:50:43 UTC (rev 2021)
+++ trunk/grub2/loader/i386/linux.c	2009-03-08 12:46:27 UTC (rev 2022)
@@ -143,9 +143,8 @@
   real_mode_mem = 0;
   prot_mode_mem = 0;
   
-#ifdef GRUB_MACHINE_PCBIOS
-#error i386-pc port adds lower memory to heap, which collides with `real_mode_mem' allocation below
-#endif
+  /* FIXME: Should request low memory from the heap when this feature is
+     implemented.  */
 
   auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
   int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)