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Commit 07f841b7 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[ARM] mm: enable sparsemem on clps7500 and RiscPC

parent b7a69ac3
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+2 −0
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@@ -250,6 +250,7 @@ config ARCH_CLPS7500
	select TIMER_ACORN
	select ISA
	select NO_IOPORT
	select ARCH_SPARSEMEM_ENABLE
	help
	  Support for the Cirrus Logic PS7500FE system-on-a-chip.

@@ -470,6 +471,7 @@ config ARCH_RPC
	select HAVE_PATA_PLATFORM
	select ISA_DMA_API
	select NO_IOPORT
	select ARCH_SPARSEMEM_ENABLE
	help
	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
	  CD-ROM interface, serial and parallel port, and the floppy drive.
+17 −3
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@@ -3,8 +3,22 @@

#include <asm/memory.h>

#define MAX_PHYSADDR_BITS	32
#define MAX_PHYSMEM_BITS	32
#define SECTION_SIZE_BITS	NODE_MEM_SIZE_BITS
/*
 * Two definitions are required for sparsemem:
 *
 * MAX_PHYSMEM_BITS: The number of physical address bits required
 *   to address the last byte of memory.
 *
 * SECTION_SIZE_BITS: The number of physical address bits to cover
 *   the maximum amount of memory in a section.
 *
 * Eg, if you have 2 banks of up to 64MB at 0x80000000, 0x84000000,
 * then MAX_PHYSMEM_BITS is 32, SECTION_SIZE_BITS is 26.
 *
 * Define these in your mach/memory.h.
 */
#if !defined(SECTION_SIZE_BITS) || !defined(MAX_PHYSMEM_BITS)
#error Sparsemem is not supported on this platform
#endif

#endif
+8 −0
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@@ -32,4 +32,12 @@
#define FLUSH_BASE_PHYS		0x00000000
#define FLUSH_BASE		0xdf000000

/*
 * Sparsemem support.  Each section is a maximum of 64MB.  The sections
 * are offset by 128MB and can cover 128MB, so that gives us a maximum
 * of 29 physmem bits.
 */
#define MAX_PHYSMEM_BITS	29
#define SECTION_SIZE_BITS	26

#endif
+8 −0
Original line number Diff line number Diff line
@@ -36,4 +36,12 @@
#define FLUSH_BASE_PHYS		0x00000000
#define FLUSH_BASE		0xdf000000

/*
 * Sparsemem support.  Each section is a maximum of 64MB.  The sections
 * are offset by 128MB and can cover 128MB, so that gives us a maximum
 * of 29 physmem bits.
 */
#define MAX_PHYSMEM_BITS	29
#define SECTION_SIZE_BITS	26

#endif