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ARM: l2c: move aurora broadcast setup to enable function

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Rather than having this hacked into the OF initialiation function, we
can handle this via the enable function instead.  While here, clean
up that code and comments a little.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2014-03-15 16:47:59 +00:00
parent 9a07f27bc5
commit 40266d6f41
1 changed files with 15 additions and 13 deletions
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28
arch/arm/mm/cache-l2x0.c
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@ -784,14 +784,22 @@ static void aurora_resume(void)
}
}
static void __init aurora_broadcast_l2_commands(void)
/*
* For Aurora cache in no outer mode, enable via the CP15 coprocessor
* broadcasting of cache commands to L2.
*/
static void __init aurora_enable_no_outer(void __iomem *base, u32 aux,
unsigned num_lock)
{
__u32 u;
/* Enable Broadcasting of cache commands to L2*/
__asm__ __volatile__("mrc p15, 1, %0, c15, c2, 0" : "=r"(u));
u32 u;
asm volatile("mrc p15, 1, %0, c15, c2, 0" : "=r" (u));
u |= AURORA_CTRL_FW; /* Set the FW bit */
__asm__ __volatile__("mcr p15, 1, %0, c15, c2, 0\n" : : "r"(u));
asm volatile("mcr p15, 1, %0, c15, c2, 0" : : "r" (u));
isb();
l2c_enable(base, aux, num_lock);
}
static void __init aurora_of_parse(const struct device_node *np,
@ -835,7 +843,7 @@ static const struct l2c_init_data of_aurora_with_outer_data __initconst = {
static const struct l2c_init_data of_aurora_no_outer_data __initconst = {
.num_lock = 4,
.of_parse = aurora_of_parse,
.enable = l2c_enable,
.enable = aurora_enable_no_outer,
.save = aurora_save,
.outer_cache = {
.resume = aurora_resume,
@ -1066,16 +1074,10 @@ int __init l2x0_of_init(u32 aux_val, u32 aux_mask)
data = of_match_node(l2x0_ids, np)->data;
/* L2 configuration can only be changed if the cache is disabled */
if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN)) {
if (!(readl_relaxed(l2x0_base + L2X0_CTRL) & L2X0_CTRL_EN))
if (data->of_parse)
data->of_parse(np, &aux_val, &aux_mask);
/* For aurora cache in no outer mode select the
* correct mode using the coprocessor*/
if (data == &of_aurora_no_outer_data)
aurora_broadcast_l2_commands();
}
if (cache_id_part_number_from_dt)
cache_id = cache_id_part_number_from_dt;
else