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MIPS: Malta: Implement mips_cdmm_phys_base() 

Implement mips_cdmm_phys_base() for Malta, returning the physical base
address 0x1fc10000 which is "typically unused".

This allows the Common Device Memory Map (CDMM) region to be mapped, and
devices in that region (such as the Fast Debug Channel (FDC) hardware
for communication over EJTAG) to be discovered.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/9177/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
James Hogan 2015-02-02 11:45:10 +00:00 committed by Ralf Baechle
parent 8286ae0330
commit 296b7c68c0
1 changed files with 7 additions and 0 deletions
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7
arch/mips/mti-malta/malta-memory.c
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@ -16,6 +16,7 @@
#include <linux/string.h> #include <linux/string.h>
#include <asm/bootinfo.h> #include <asm/bootinfo.h>
#include <asm/cdmm.h>
#include <asm/maar.h> #include <asm/maar.h>
#include <asm/sections.h> #include <asm/sections.h>
#include <asm/fw/fw.h> #include <asm/fw/fw.h>
@ -196,3 +197,9 @@ unsigned platform_maar_init(unsigned num_pairs)
return maar_config(cfg, num_cfg, num_pairs); return maar_config(cfg, num_cfg, num_pairs);
} }
phys_addr_t mips_cdmm_phys_base(void)
{
/* This address is "typically unused" */
return 0x1fc10000;
}