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Author SHA1 Message Date
Nicholas PigginandAnup Patel 63350c6ea6 lib: sbi: Add hart_ prefix to PMP functions 
PMP functions that deal with hart PMP CSRs are given a sbi_hart_ prefix,
to distinguish from RISC-V PMP encoding functions.

The is_pmp_entry_mapped() function is changed a little more, to align
with other PMP conventions, and made to return a bool to make it more
obvious that it returns a bool and not an SBI_ return code.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260430045528.420437-8-npiggin@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
 2026-06-10 17:37:49 +05:30
Nicholas PigginandAnup Patel f7738cc1e5 lib: sbi: Add sbi_pmp_is_enabled() helper 
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260430045528.420437-7-npiggin@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
 2026-06-10 13:25:29 +05:30
Nicholas PigginandAnup Patel 8f1a6164f2 lib: sbi: Add PMP CSR read and write accessors 
PMPCFG CSR access is non-trivial as it requires shifting and masking, it
makes PMP manipulation code simpler if this basic CSR read/write access is
abstracted away.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260430045528.420437-6-npiggin@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
 2026-06-10 13:23:18 +05:30
Nicholas PigginandAnup Patel e9797b5e57 lib: sbi: Move RISC-V PMP encoding functions to sbi_pmp.c 
Create a new file for handling the RISC-V PMP format and the new pmp_t
type, as opposed to hart PMP CSR specific access.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260430045528.420437-4-npiggin@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
 2026-06-10 13:17:30 +05:30
Nicholas PigginandAnup Patel c93a89f214 lib: sbi: split PMP encoding and CSR access 
Allow PMP encoding functions to be shared with non-hart PMP manipulation
by splitting encoding / decoding and hart PMP CSR access into their own
functions.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260430045528.420437-3-npiggin@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
 2026-06-10 09:57:58 +05:30
Nicholas PigginandAnup Patel 8ae3b0985a lib: sbi: Introduce pmp_t type 
To help abstract details of PMP encoding and access, add a new pmp_t
type which contains address and cfg in the format of the riscv CSRs.
There is no functional change.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260430045528.420437-2-npiggin@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
 2026-06-10 09:56:29 +05:30
Nicholas PigginandAnup Patel 6767861c48 platform: generic: Tenstorrent Atlantis support 
Add the Tenstorrent Atlantis as a generic-platform. This initial support
enables the single_fw_region option, and verifies and prints HART PMA
CSR configuration.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260424062520.238403-1-npiggin@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
 2026-05-09 20:57:50 +05:30