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ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3

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This adds the TCM interface to Linux, when active, it will
detect and report TCM memories and sizes early in boot if
present, introduce generic TCM memory handling, provide a
generic TCM memory pool and select TCM memory for the U300
platform.

See the Documentation/arm/tcm.txt for documentation.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Linus Walleij
2009-09-15 17:30:37 +01:00
committed by Russell King
parent 1824090496
commit bc581770cf
11 changed files with 525 additions and 0 deletions
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8
arch/arm/mm/init.c
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@@ -613,6 +613,14 @@ void __init mem_init(void)
void free_initmem(void)
{
#ifdef CONFIG_HAVE_TCM
extern char *__tcm_start, *__tcm_end;
totalram_pages += free_area(__phys_to_pfn(__pa(__tcm_start)),
__phys_to_pfn(__pa(__tcm_end)),
"TCM link");
#endif
if (!machine_is_integrator() && !machine_is_cintegrator())
totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)),
__phys_to_pfn(__pa(__init_end)),