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https://github.com/riscv-software-src/opensbi.git
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lib: sbi: Add function to register new domain
We add sbi_domain_register() function to help platform code register a new domain explicitly instead of depending on domain_get() platform callback. This function will eventually help us completely remove the domain_get() platform callback. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
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@@ -146,6 +146,16 @@ void sbi_domain_dump(const struct sbi_domain *dom, const char *suffix);
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/** Dump all domain details on the console */
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void sbi_domain_dump_all(const char *suffix);
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/**
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* Register a new domain
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* @param dom pointer to domain
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* @param assign_mask pointer to HART mask of HARTs assigned to the domain
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*
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* @return 0 on success and negative error code on failure
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*/
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int sbi_domain_register(struct sbi_domain *dom,
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const struct sbi_hartmask *assign_mask);
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/** Finalize domain tables and startup non-root domains */
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int sbi_domain_finalize(struct sbi_scratch *scratch, u32 cold_hartid);
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@@ -367,6 +367,77 @@ void sbi_domain_dump_all(const char *suffix)
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}
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}
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int sbi_domain_register(struct sbi_domain *dom,
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const struct sbi_hartmask *assign_mask)
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{
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u32 i;
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int rc;
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struct sbi_domain *tdom;
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u32 cold_hartid = current_hartid();
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const struct sbi_platform *plat = sbi_platform_thishart_ptr();
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if (!dom || !assign_mask)
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return SBI_EINVAL;
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/* Check if domain already discovered */
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sbi_domain_for_each(i, tdom) {
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if (tdom == dom)
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return SBI_EALREADY;
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}
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/*
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* Ensure that we have room for Domain Index to
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* HART ID mapping
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*/
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if (SBI_DOMAIN_MAX_INDEX <= domain_count) {
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sbi_printf("%s: No room for %s\n",
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__func__, dom->name);
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return SBI_ENOSPC;
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}
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/* Sanitize discovered domain */
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rc = sanitize_domain(plat, dom);
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if (rc) {
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sbi_printf("%s: sanity checks failed for"
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" %s (error %d)\n", __func__,
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dom->name, rc);
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return rc;
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}
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/* Assign index to domain */
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dom->index = domain_count++;
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domidx_to_domain_table[dom->index] = dom;
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/* Clear assigned HARTs of domain */
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sbi_hartmask_clear_all(&dom->assigned_harts);
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/* Assign domain to HART if HART is a possible HART */
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sbi_hartmask_for_each_hart(i, assign_mask) {
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if (!sbi_hartmask_test_hart(i, dom->possible_harts))
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continue;
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tdom = hartid_to_domain_table[i];
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if (tdom)
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sbi_hartmask_clear_hart(i,
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&tdom->assigned_harts);
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hartid_to_domain_table[i] = dom;
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sbi_hartmask_set_hart(i, &dom->assigned_harts);
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/*
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* If cold boot HART is assigned to this domain then
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* override boot HART of this domain.
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*/
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if (i == cold_hartid &&
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dom->boot_hartid != cold_hartid) {
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sbi_printf("Domain%d Boot HARTID forced to"
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" %d\n", dom->index, cold_hartid);
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dom->boot_hartid = cold_hartid;
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}
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}
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return 0;
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}
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int sbi_domain_finalize(struct sbi_scratch *scratch, u32 cold_hartid)
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{
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int rc;
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