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risc-v/mpfs: OpenSBI: utilize an index2id table

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Hart index to hart id table is used to track unused and used harts. This
table is useful when configuring only some of the harts for OpenSBI use.
Mpfs will always have the hart0 unused, so mark it with -1.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
This commit is contained in:
Eero Nurkkala 2022-01-21 16:31:26 +02:00 committed by Alan Carvalho de Assis
parent 8c582c27b8
commit 2a22c0e32d
1 changed files with 15 additions and 1 deletions
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16
arch/risc-v/src/mpfs/mpfs_opensbi.c
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@ -178,13 +178,27 @@ static struct aclint_mswi_data mpfs_mswi =
.hart_count = MPFS_HART_COUNT,
};
const struct sbi_platform platform =
/* OpenSBI picks the used and unused harts via the hart_index2id table.
* Unused hart is marked with -1. Mpfs will always have the hart0 unused.
*/
static const u32 mpfs_hart_index2id[MPFS_HART_COUNT] =
{
[0] = -1,
[1] = 1,
[2] = 2,
[3] = 3,
[4] = 4,
};
static const struct sbi_platform platform =
{
.opensbi_version = OPENSBI_VERSION,
.platform_version = SBI_PLATFORM_VERSION(0x0, 0x01),
.name = "Microchip PolarFire(R) SoC",
.features = SBI_PLATFORM_DEFAULT_FEATURES,
.hart_count = MPFS_HART_COUNT,
.hart_index2id = mpfs_hart_index2id,
.hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
.platform_ops_addr = (unsigned long)&platform_ops,
.firmware_context = 0