diff options
| -rw-r--r-- | hw/acpi/core.c | 40 | ||||
| -rw-r--r-- | include/hw/acpi/acpi.h | 4 |
2 files changed, 44 insertions, 0 deletions
diff --git a/hw/acpi/core.c b/hw/acpi/core.c index 7467b88e27..4d25d8eff0 100644 --- a/hw/acpi/core.c +++ b/hw/acpi/core.c @@ -309,6 +309,46 @@ out: error_propagate(errp, err); } +static bool acpi_table_builtin = false; + +void acpi_table_add_builtin(const QemuOpts *opts, Error **errp) +{ + acpi_table_builtin = true; + acpi_table_add(opts, errp); +} + +unsigned acpi_table_len(void *current) +{ + struct acpi_table_header *hdr = current - sizeof(hdr->_length); + return hdr->_length; +} + +static +void *acpi_table_hdr(void *h) +{ + struct acpi_table_header *hdr = h; + return &hdr->sig; +} + +uint8_t *acpi_table_first(void) +{ + if (acpi_table_builtin || !acpi_tables) { + return NULL; + } + return acpi_table_hdr(acpi_tables + ACPI_TABLE_PFX_SIZE); +} + +uint8_t *acpi_table_next(uint8_t *current) +{ + uint8_t *next = current + acpi_table_len(current); + + if (next - acpi_tables >= acpi_tables_len) { + return NULL; + } else { + return acpi_table_hdr(next); + } +} + static void acpi_notify_wakeup(Notifier *notifier, void *data) { ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup); diff --git a/include/hw/acpi/acpi.h b/include/hw/acpi/acpi.h index 51733d3390..6bbcb1750d 100644 --- a/include/hw/acpi/acpi.h +++ b/include/hw/acpi/acpi.h @@ -165,6 +165,10 @@ extern int acpi_enabled; extern char unsigned *acpi_tables; extern size_t acpi_tables_len; +uint8_t *acpi_table_first(void); +uint8_t *acpi_table_next(uint8_t *current); +unsigned acpi_table_len(void *current); void acpi_table_add(const QemuOpts *opts, Error **errp); +void acpi_table_add_builtin(const QemuOpts *opts, Error **errp); #endif /* !QEMU_HW_ACPI_H */ |