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lib: utils: Allow CLINT functions to be used for multiple CLINTs

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We extend CLINT cold init function to have a "struct clint_data *"
parameter pointing to CLINT details. This allows platforms to use
CLINT functions for multiple CLINT instances.

When multiple CLINTs are present, the platform can also provide
one of the CLINT as reference CLINT for other CLINTs. This will
help CLINTs to sync their time value with reference CLINT using
a time_delta computed in warm init function.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-05-12 18:38:31 +05:30
committed by Anup Patel
parent d30bb68448
commit a9a9751185
11 changed files with 202 additions and 87 deletions
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9
lib/utils/timer/fdt_timer_clint.c
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@@ -11,6 +11,8 @@
#include <sbi_utils/timer/fdt_timer.h>
#include <sbi_utils/sys/clint.h>
static struct clint_data clint_timer;
static int timer_clint_cold_init(void *fdt, int nodeoff,
const struct fdt_match *match)
{
@@ -27,7 +29,12 @@ static int timer_clint_cold_init(void *fdt, int nodeoff,
return rc;
/* TODO: We should figure-out CLINT has_64bit_mmio from DT node */
return clint_cold_timer_init(addr, max_hartid + 1, TRUE);
clint_timer.addr = addr;
clint_timer.first_hartid = 0;
clint_timer.hart_count = max_hartid + 1;
clint_timer.has_64bit_mmio = TRUE;
return clint_cold_timer_init(&clint_timer, NULL);
}
static const struct fdt_match timer_clint_match[] = {