diff options
Diffstat (limited to 'hw/i386/acpi-build.c')
| -rw-r--r-- | hw/i386/acpi-build.c | 162 |
1 files changed, 2 insertions, 160 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 74586f346f..cc638a9ab0 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -54,6 +54,8 @@ #include "hw/i386/q35-acpi-dsdt.hex" #include "hw/i386/acpi-dsdt.hex" +#include "hw/acpi/aml-build.h" + #include "qapi/qmp/qint.h" #include "qom/qom-qobject.h" #include "exec/ram_addr.h" @@ -280,166 +282,6 @@ build_header(GArray *linker, GArray *table_data, table_data->data, h, len, &h->checksum); } -static inline GArray *build_alloc_array(void) -{ - return g_array_new(false, true /* clear */, 1); -} - -static inline void build_free_array(GArray *array) -{ - g_array_free(array, true); -} - -static inline void build_prepend_byte(GArray *array, uint8_t val) -{ - g_array_prepend_val(array, val); -} - -static inline void build_append_byte(GArray *array, uint8_t val) -{ - g_array_append_val(array, val); -} - -static inline void build_append_array(GArray *array, GArray *val) -{ - g_array_append_vals(array, val->data, val->len); -} - -#define ACPI_NAMESEG_LEN 4 - -static void GCC_FMT_ATTR(2, 3) -build_append_nameseg(GArray *array, const char *format, ...) -{ - /* It would be nicer to use g_string_vprintf but it's only there in 2.22 */ - char s[] = "XXXX"; - int len; - va_list args; - - va_start(args, format); - len = vsnprintf(s, sizeof s, format, args); - va_end(args); - - assert(len <= ACPI_NAMESEG_LEN); - - g_array_append_vals(array, s, len); - /* Pad up to ACPI_NAMESEG_LEN characters if necessary. */ - g_array_append_vals(array, "____", ACPI_NAMESEG_LEN - len); -} - -/* 5.4 Definition Block Encoding */ -enum { - PACKAGE_LENGTH_1BYTE_SHIFT = 6, /* Up to 63 - use extra 2 bits. */ - PACKAGE_LENGTH_2BYTE_SHIFT = 4, - PACKAGE_LENGTH_3BYTE_SHIFT = 12, - PACKAGE_LENGTH_4BYTE_SHIFT = 20, -}; - -static void build_prepend_package_length(GArray *package, unsigned min_bytes) -{ - uint8_t byte; - unsigned length = package->len; - unsigned length_bytes; - - if (length + 1 < (1 << PACKAGE_LENGTH_1BYTE_SHIFT)) { - length_bytes = 1; - } else if (length + 2 < (1 << PACKAGE_LENGTH_3BYTE_SHIFT)) { - length_bytes = 2; - } else if (length + 3 < (1 << PACKAGE_LENGTH_4BYTE_SHIFT)) { - length_bytes = 3; - } else { - length_bytes = 4; - } - - /* Force length to at least min_bytes. - * This wastes memory but that's how bios did it. - */ - length_bytes = MAX(length_bytes, min_bytes); - - /* PkgLength is the length of the inclusive length of the data. */ - length += length_bytes; - - switch (length_bytes) { - case 1: - byte = length; - build_prepend_byte(package, byte); - return; - case 4: - byte = length >> PACKAGE_LENGTH_4BYTE_SHIFT; - build_prepend_byte(package, byte); - length &= (1 << PACKAGE_LENGTH_4BYTE_SHIFT) - 1; - /* fall through */ - case 3: - byte = length >> PACKAGE_LENGTH_3BYTE_SHIFT; - build_prepend_byte(package, byte); - length &= (1 << PACKAGE_LENGTH_3BYTE_SHIFT) - 1; - /* fall through */ - case 2: - byte = length >> PACKAGE_LENGTH_2BYTE_SHIFT; - build_prepend_byte(package, byte); - length &= (1 << PACKAGE_LENGTH_2BYTE_SHIFT) - 1; - /* fall through */ - } - /* - * Most significant two bits of byte zero indicate how many following bytes - * are in PkgLength encoding. - */ - byte = ((length_bytes - 1) << PACKAGE_LENGTH_1BYTE_SHIFT) | length; - build_prepend_byte(package, byte); -} - -static void build_package(GArray *package, uint8_t op, unsigned min_bytes) -{ - build_prepend_package_length(package, min_bytes); - build_prepend_byte(package, op); -} - -static void build_extop_package(GArray *package, uint8_t op) -{ - build_package(package, op, 1); - build_prepend_byte(package, 0x5B); /* ExtOpPrefix */ -} - -static void build_append_value(GArray *table, uint32_t value, int size) -{ - uint8_t prefix; - int i; - - switch (size) { - case 1: - prefix = 0x0A; /* BytePrefix */ - break; - case 2: - prefix = 0x0B; /* WordPrefix */ - break; - case 4: - prefix = 0x0C; /* DWordPrefix */ - break; - default: - assert(0); - return; - } - build_append_byte(table, prefix); - for (i = 0; i < size; ++i) { - build_append_byte(table, value & 0xFF); - value = value >> 8; - } -} - -static void build_append_int(GArray *table, uint32_t value) -{ - if (value == 0x00) { - build_append_byte(table, 0x00); /* ZeroOp */ - } else if (value == 0x01) { - build_append_byte(table, 0x01); /* OneOp */ - } else if (value <= 0xFF) { - build_append_value(table, value, 1); - } else if (value <= 0xFFFF) { - build_append_value(table, value, 2); - } else { - build_append_value(table, value, 4); - } -} - static GArray *build_alloc_method(const char *name, uint8_t arg_count) { GArray *method = build_alloc_array(); |