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power: reset: at91-reset: make at91sam9g45_restart() generic 

Make at91sam9g45_restart() generic.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Claudiu.Beznea@microchip.com 2020-01-21 10:03:37 +00:00 committed by Sebastian Reichel
parent 68a84a3e68
commit fcd0532fac
1 changed files with 6 additions and 15 deletions
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21
drivers/power/reset/at91-reset.c
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@ -105,32 +105,23 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
struct at91_reset *reset = container_of(this, struct at91_reset, nb);
asm volatile(
/*
* Test wether we have a second RAM controller to care
* about.
*
* First, test that we can dereference the virtual address.
*/
"cmp %1, #0\n\t"
"beq 1f\n\t"
/* Then, test that the RAM controller is enabled */
"ldr r4, [%1]\n\t"
"cmp r4, #0\n\t"
/* Align to cache lines */
".balign 32\n\t"
/* Disable SDRAM0 accesses */
"1: str %3, [%0, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t"
" tst %0, #0\n\t"
" beq 1f\n\t"
" str %3, [%0, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t"
/* Power down SDRAM0 */
" str %4, [%0, %6]\n\t"
/* Disable SDRAM1 accesses */
"1: tst %1, #0\n\t"
" beq 2f\n\t"
" strne %3, [%1, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t"
/* Power down SDRAM1 */
" strne %4, [%1, %6]\n\t"
/* Reset CPU */
" str %5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t"
"2: str %5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t"
" b .\n\t"
: