Add acpi_error_string() and use it in the APIC setup diagnostics, so the
startup path can report why ACPI/APIC setup failed instead of a bare
number.
---
i386/i386at/acpi_parse_apic.c | 17 +++++++++++++++++
i386/i386at/acpi_parse_apic.h | 1 +
2 files changed, 18 insertions(+)
diff --git a/i386/i386at/acpi_parse_apic.c b/i386/i386at/acpi_parse_apic.c
index 848585c2..d7a55dbf 100644
--- a/i386/i386at/acpi_parse_apic.c
+++ b/i386/i386at/acpi_parse_apic.c
@@ -36,6 +36,23 @@ static struct acpi_apic *apic_madt = NULL;
unsigned lapic_addr;
uint32_t *hpet_addr;
+const char *
+acpi_error_string(int err)
+{
+ switch (err) {
+ case ACPI_BAD_CHECKSUM: return "bad ACPI table checksum";
+ case ACPI_BAD_ALIGN: return "bad ACPI RSDP alignment";
+ case ACPI_NO_RSDP: return "no ACPI RSDP found";
+ case ACPI_NO_RSDT: return "no ACPI RSDT/XSDT found";
+ case ACPI_BAD_SIGNATURE: return "bad ACPI table signature";
+ case ACPI_NO_APIC: return "no APIC/MADT table found";
+ case ACPI_NO_LAPIC: return "cannot map the Local APIC";
+ case ACPI_APIC_FAILURE: return "no usable APIC CPU topology";
+ case ACPI_FIT_FAILURE: return "cannot size the accepted CPU list";
+ default: return "unknown ACPI/APIC error";
+ }
+}
+
/*
* acpi_print_info: shows by screen the ACPI's rsdp and rsdt virtual address
* and the number of entries stored in RSDT table.
diff --git a/i386/i386at/acpi_parse_apic.h b/i386/i386at/acpi_parse_apic.h
index df8d4bae..64819213 100644
--- a/i386/i386at/acpi_parse_apic.h
+++ b/i386/i386at/acpi_parse_apic.h
@@ -197,6 +197,7 @@ struct acpi_hpet {
int acpi_apic_init(void);
void acpi_print_info(phys_addr_t rsdp, void *rsdt, int acpi_rsdt_n);
+const char *acpi_error_string(int err);
extern unsigned lapic_addr;
