diff options
Diffstat (limited to 'drivers/arm/gic/v3/gicv3_helpers.c')
| -rw-r--r-- | drivers/arm/gic/v3/gicv3_helpers.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/arm/gic/v3/gicv3_helpers.c b/drivers/arm/gic/v3/gicv3_helpers.c index a0f44e966..753d995d7 100644 --- a/drivers/arm/gic/v3/gicv3_helpers.c +++ b/drivers/arm/gic/v3/gicv3_helpers.c @@ -86,8 +86,7 @@ void gicv3_rdistif_base_addrs_probe(uintptr_t *rdistif_base_addrs, if (proc_num < rdistif_num) { rdistif_base_addrs[proc_num] = rdistif_base; } - - rdistif_base += (1U << GICR_PCPUBASE_SHIFT); + rdistif_base += gicv3_redist_size(typer_val); } while ((typer_val & TYPER_LAST_BIT) == 0U); } @@ -383,12 +382,29 @@ unsigned int gicv3_rdistif_get_number_frames(const uintptr_t gicr_frame) uintptr_t rdistif_base = gicr_frame; unsigned int count; - for (count = 1; count < PLATFORM_CORE_COUNT; count++) { - if ((gicr_read_typer(rdistif_base) & TYPER_LAST_BIT) != 0U) { + for (count = 1U; count < PLATFORM_CORE_COUNT; count++) { + uint64_t typer_val = gicr_read_typer(rdistif_base); + + if ((typer_val & TYPER_LAST_BIT) != 0U) { break; } - rdistif_base += (1U << GICR_PCPUBASE_SHIFT); + rdistif_base += gicv3_redist_size(typer_val); } return count; } + +unsigned int gicv3_get_component_partnum(const uintptr_t gic_frame) +{ + unsigned int part_id; + + /* + * The lower 8 bits of PIDR0, complemented by the lower 4 bits of + * PIDR1 contain a part number identifying the GIC component at a + * particular base address. + */ + part_id = mmio_read_32(gic_frame + GICD_PIDR0_GICV3) & 0xff; + part_id |= (mmio_read_32(gic_frame + GICD_PIDR1_GICV3) << 8) & 0xf00; + + return part_id; +} |