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RealView: Make more vmalloc space by changing IO_ADDRESS 

Since boards like PB11MPCore have 512MB of RAM and 128MB of flash, the
virtual space is short on vmalloc memory and mapping the flash fails.
This patch changes the IO_ADDRESS so that static mappings start at
0xfc000000 and moves the PCI virtual addresses higher up. The new
VMALLOC_END is set to 0xf8000000 (512MB higher than the old value).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas 2008-11-10 14:10:14 +00:00
parent 2c0aec814d
commit 877d1f3389
3 changed files with 10 additions and 3 deletions
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2
arch/arm/mach-realview/include/mach/debug-macro.S
View File

@ -35,7 +35,7 @@
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
moveq \rx, #0x10000000
movne \rx, #0xf0000000 @ virtual base
movne \rx, #0xfb000000 @ virtual base
orr \rx, \rx, #DEBUG_LL_UART_OFFSET
.endm

9
arch/arm/mach-realview/include/mach/hardware.h
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@ -25,7 +25,14 @@
#include <asm/sizes.h>
/* macro to get at IO space when running virtually */
#define IO_ADDRESS(x) (((x) & 0x0fffffff) + 0xf0000000)
/*
* Statically mapped addresses:
*
* 10xx xxxx -> fbxx xxxx
* 1exx xxxx -> fdxx xxxx
* 1fxx xxxx -> fexx xxxx
*/
#define IO_ADDRESS(x) (((x) & 0x03ffffff) + 0xfb000000)
#define __io_address(n) __io(IO_ADDRESS(n))
#endif

2
arch/arm/mach-realview/include/mach/vmalloc.h
View File

@ -18,4 +18,4 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define VMALLOC_END (PAGE_OFFSET + 0x18000000)
#define VMALLOC_END 0xf8000000