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| author | Anup Patel <anup.patel@wdc.com> | 2021-07-23 13:07:51 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2021-08-14 06:32:39 +0300 |
| commit | f3a0eb8583828b0223f9e924672fc455359ea6c8 (patch) | |
| tree | 611d50c4ece9e7c14a5eede13107bed6be24fa03 /lib/utils/timer/fdt_timer_mtimer.c | |
| parent | 7a3a0cce4d5b145b5659d4204c1ed8c8efae31cc (diff) | |
| download | opensbi-f3a0eb8583828b0223f9e924672fc455359ea6c8.tar.xz | |
lib: utils/fdt: Extend fdt_parse_aclint_node() function
The fdt_parse_aclint_node() is used to parse DT node for SiFive
CLINT, ACLINT MTIMER, and ACLINT MSWI devices.
The ACLINT MTIMER has undergone following changes:
1) MTIMER DT node now requires separate addresses in for MTIME
register and MTIMECMPx registers in the reg DT property.
2) MTIMER DT node might have no interrupts-extended DT property
when the MTIMER device has no associated HARTs (i.e. the
MTIMER device has no MTIMECMPx registers)
This patch extends fdt_parse_aclint_node() to handle above
mentioned changes in ACLINT MTIMER DT bindings.
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 | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/lib/utils/timer/fdt_timer_mtimer.c b/lib/utils/timer/fdt_timer_mtimer.c index 3f830ad..b08ed38 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, addr, size; + unsigned long offset, addr[2], size[2]; struct aclint_mtimer_data *mt, *mtmaster = NULL; if (MTIMER_MAX_NR <= mtimer_count) @@ -31,18 +31,19 @@ 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, &addr, &size, + rc = fdt_parse_aclint_node(fdt, nodeoff, true, + &addr[0], &size[0], &addr[1], &size[1], &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) { + if (match->data) { /* SiFive CLINT */ + /* Set CLINT addresses */ + mt->mtimecmp_addr = addr[0] + ACLINT_DEFAULT_MTIMECMP_OFFSET; + mt->mtimecmp_size = ACLINT_DEFAULT_MTIMECMP_SIZE; + mt->mtime_addr = addr[0] + ACLINT_DEFAULT_MTIME_OFFSET; + mt->mtime_size = size[0] - mt->mtimecmp_size; /* Adjust MTIMER address and size for CLINT device */ offset = *((unsigned long *)match->data); mt->mtime_addr += offset; @@ -51,6 +52,12 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff, /* Parse additional CLINT properties */ if (fdt_getprop(fdt, nodeoff, "clint,has-no-64bit-mmio", &rc)) mt->has_64bit_mmio = false; + } else { /* RISC-V ACLINT MTIMER */ + /* Set ACLINT MTIMER addresses */ + mt->mtime_addr = addr[0]; + mt->mtime_size = size[0]; + mt->mtimecmp_addr = addr[1]; + mt->mtimecmp_size = size[1]; } rc = aclint_mtimer_cold_init(mt, mtmaster); |