diff options
| author | Anup Patel <anup.patel@wdc.com> | 2021-07-23 14:09:43 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2021-08-14 09:02:33 +0530 |
| commit | e0d1b9db8abd8288afbaa4f93a4ace6a9b6f0100 (patch) | |
| tree | a404340f4c146ae45de2ed5d50a4427de8e78672 /lib/utils/timer/fdt_timer_mtimer.c | |
| parent | 47a47654e8d3997b059d11bb8845ed0037e88c8e (diff) | |
lib: utils/timer: Allow separate base addresses for MTIME and MTIMECMP
We extend the ACLINT library to support separate base addresses
for MTIME and MTIMECMP registers.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'lib/utils/timer/fdt_timer_mtimer.c')
| -rw-r--r-- | lib/utils/timer/fdt_timer_mtimer.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/lib/utils/timer/fdt_timer_mtimer.c b/lib/utils/timer/fdt_timer_mtimer.c index 4907428..3f830ad 100644 --- a/lib/utils/timer/fdt_timer_mtimer.c +++ b/lib/utils/timer/fdt_timer_mtimer.c @@ -22,7 +22,7 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff, const struct fdt_match *match) { int rc; - unsigned long offset; + unsigned long offset, addr, size; struct aclint_mtimer_data *mt, *mtmaster = NULL; if (MTIMER_MAX_NR <= mtimer_count) @@ -31,19 +31,23 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff, if (0 < mtimer_count) mtmaster = &mtimer[0]; - rc = fdt_parse_aclint_node(fdt, nodeoff, true, &mt->addr, &mt->size, + rc = fdt_parse_aclint_node(fdt, nodeoff, true, &addr, &size, &mt->first_hartid, &mt->hart_count); if (rc) return rc; mt->has_64bit_mmio = true; + mt->mtimecmp_addr = addr + ACLINT_DEFAULT_MTIMECMP_OFFSET; + mt->mtimecmp_size = ACLINT_DEFAULT_MTIMECMP_SIZE; + mt->mtime_addr = addr + ACLINT_DEFAULT_MTIME_OFFSET; + mt->mtime_size = size - mt->mtimecmp_size; + if (match->data) { /* Adjust MTIMER address and size for CLINT device */ offset = *((unsigned long *)match->data); - mt->addr += offset; - if ((mt->size - offset) < ACLINT_MTIMER_SIZE) - return SBI_EINVAL; - mt->size -= offset; + mt->mtime_addr += offset; + mt->mtimecmp_addr += offset; + mt->mtime_size -= offset; /* Parse additional CLINT properties */ if (fdt_getprop(fdt, nodeoff, "clint,has-no-64bit-mmio", &rc)) mt->has_64bit_mmio = false; |