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ARM: l2c: ux500: implement dummy write_sec method 

ux500 can't write to any of the secure registers on the L2C controllers,
so provide a dummy handler which ignores all writes.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2014-03-16 19:15:21 +00:00
parent 00123d9a8d
commit 6716173347
1 changed files with 10 additions and 9 deletions
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19
arch/arm/mach-ux500/cache-l2x0.c
View File

@ -35,6 +35,14 @@ static int __init ux500_l2x0_unlock(void)
return 0;
}
static void ux500_l2c310_write_sec(unsigned long val, unsigned reg)
{
/*
* We can't write to secure registers as we are in non-secure
* mode, until we have some SMI service available.
*/
}
static int __init ux500_l2x0_init(void)
{
u32 aux_val = 0x3e000000;
@ -56,21 +64,14 @@ static int __init ux500_l2x0_init(void)
/* 64KB way size */
aux_val |= L2C_AUX_CTRL_WAY_SIZE(3);
outer_cache.write_sec = ux500_l2c310_write_sec;
/* 64KB way size, 8 way associativity, force WA */
if (of_have_populated_dt())
l2x0_of_init(aux_val, 0xc0000fff);
else
l2x0_init(l2x0_base, aux_val, 0xc0000fff);
/*
* We can't disable l2 as we are in non secure mode, currently
* this seems be called only during kexec path. So let's
* override outer.disable with nasty assignment until we have
* some SMI service available.
*/
outer_cache.disable = NULL;
outer_cache.set_debug = NULL;
return 0;
}