[PATCH v4 2/9] acpi: carve out qfw_acpi.c
Ilias Apalodimas
ilias.apalodimas at linaro.org
Fri Dec 29 08:33:39 CET 2023
On Tue, Dec 19, 2023 at 04:04:01PM +0100, Heinrich Schuchardt wrote:
> Move the code related to copying tables from QEMU to a separate code
> module.
>
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
> Reviewed-by: Tom Rini <trini at konsulko.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> ---
> v4:
> no change
> v3:
> no change
> v2:
> add missing blank line
> ---
> drivers/misc/Makefile | 1 +
> drivers/misc/qfw.c | 240 -------------------------------------
> drivers/misc/qfw_acpi.c | 256 ++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 257 insertions(+), 240 deletions(-)
> create mode 100644 drivers/misc/qfw_acpi.c
Reviewed-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
>
> diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
> index b67b82358a..cda701d38e 100644
> --- a/drivers/misc/Makefile
> +++ b/drivers/misc/Makefile
> @@ -63,6 +63,7 @@ obj-$(CONFIG_$(SPL_)PWRSEQ) += pwrseq-uclass.o
> obj-$(CONFIG_QCOM_GENI_SE) += qcom-geni-se.o
> ifdef CONFIG_QFW
> obj-y += qfw.o
> +obj-$(CONFIG_QFW_ACPI) += qfw_acpi.o
> obj-$(CONFIG_QFW_PIO) += qfw_pio.o
> obj-$(CONFIG_QFW_MMIO) += qfw_mmio.o
> obj-$(CONFIG_SANDBOX) += qfw_sandbox.o
> diff --git a/drivers/misc/qfw.c b/drivers/misc/qfw.c
> index 307334faf4..db98619fdf 100644
> --- a/drivers/misc/qfw.c
> +++ b/drivers/misc/qfw.c
> @@ -21,246 +21,6 @@
> #include <tables_csum.h>
> #include <asm/acpi_table.h>
>
> -#ifdef QFW_ACPI
> -/*
> - * This function allocates memory for ACPI tables
> - *
> - * @entry : BIOS linker command entry which tells where to allocate memory
> - * (either high memory or low memory)
> - * @addr : The address that should be used for low memory allcation. If the
> - * memory allocation request is 'ZONE_HIGH' then this parameter will
> - * be ignored.
> - * @return: 0 on success, or negative value on failure
> - */
> -static int bios_linker_allocate(struct udevice *dev,
> - struct bios_linker_entry *entry, ulong *addr)
> -{
> - uint32_t size, align;
> - struct fw_file *file;
> - unsigned long aligned_addr;
> -
> - align = le32_to_cpu(entry->alloc.align);
> - /* align must be power of 2 */
> - if (align & (align - 1)) {
> - printf("error: wrong alignment %u\n", align);
> - return -EINVAL;
> - }
> -
> - file = qfw_find_file(dev, entry->alloc.file);
> - if (!file) {
> - printf("error: can't find file %s\n", entry->alloc.file);
> - return -ENOENT;
> - }
> -
> - size = be32_to_cpu(file->cfg.size);
> -
> - /*
> - * ZONE_HIGH means we need to allocate from high memory, since
> - * malloc space is already at the end of RAM, so we directly use it.
> - * If allocation zone is ZONE_FSEG, then we use the 'addr' passed
> - * in which is low memory
> - */
> - if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_HIGH) {
> - aligned_addr = (unsigned long)memalign(align, size);
> - if (!aligned_addr) {
> - printf("error: allocating resource\n");
> - return -ENOMEM;
> - }
> - if (aligned_addr < gd->arch.table_start_high)
> - gd->arch.table_start_high = aligned_addr;
> - if (aligned_addr + size > gd->arch.table_end_high)
> - gd->arch.table_end_high = aligned_addr + size;
> -
> - } else if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_FSEG) {
> - aligned_addr = ALIGN(*addr, align);
> - } else {
> - printf("error: invalid allocation zone\n");
> - return -EINVAL;
> - }
> -
> - debug("bios_linker_allocate: allocate file %s, size %u, zone %d, align %u, addr 0x%lx\n",
> - file->cfg.name, size, entry->alloc.zone, align, aligned_addr);
> -
> - qfw_read_entry(dev, be16_to_cpu(file->cfg.select), size,
> - (void *)aligned_addr);
> - file->addr = aligned_addr;
> -
> - /* adjust address for low memory allocation */
> - if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_FSEG)
> - *addr = (aligned_addr + size);
> -
> - return 0;
> -}
> -
> -/*
> - * This function patches ACPI tables previously loaded
> - * by bios_linker_allocate()
> - *
> - * @entry : BIOS linker command entry which tells how to patch
> - * ACPI tables
> - * @return: 0 on success, or negative value on failure
> - */
> -static int bios_linker_add_pointer(struct udevice *dev,
> - struct bios_linker_entry *entry)
> -{
> - struct fw_file *dest, *src;
> - uint32_t offset = le32_to_cpu(entry->pointer.offset);
> - uint64_t pointer = 0;
> -
> - dest = qfw_find_file(dev, entry->pointer.dest_file);
> - if (!dest || !dest->addr)
> - return -ENOENT;
> - src = qfw_find_file(dev, entry->pointer.src_file);
> - if (!src || !src->addr)
> - return -ENOENT;
> -
> - debug("bios_linker_add_pointer: dest->addr 0x%lx, src->addr 0x%lx, offset 0x%x size %u, 0x%llx\n",
> - dest->addr, src->addr, offset, entry->pointer.size, pointer);
> -
> - memcpy(&pointer, (char *)dest->addr + offset, entry->pointer.size);
> - pointer = le64_to_cpu(pointer);
> - pointer += (unsigned long)src->addr;
> - pointer = cpu_to_le64(pointer);
> - memcpy((char *)dest->addr + offset, &pointer, entry->pointer.size);
> -
> - return 0;
> -}
> -
> -/*
> - * This function updates checksum fields of ACPI tables previously loaded
> - * by bios_linker_allocate()
> - *
> - * @entry : BIOS linker command entry which tells where to update ACPI table
> - * checksums
> - * @return: 0 on success, or negative value on failure
> - */
> -static int bios_linker_add_checksum(struct udevice *dev,
> - struct bios_linker_entry *entry)
> -{
> - struct fw_file *file;
> - uint8_t *data, cksum = 0;
> - uint8_t *cksum_start;
> -
> - file = qfw_find_file(dev, entry->cksum.file);
> - if (!file || !file->addr)
> - return -ENOENT;
> -
> - data = (uint8_t *)(file->addr + le32_to_cpu(entry->cksum.offset));
> - cksum_start = (uint8_t *)(file->addr + le32_to_cpu(entry->cksum.start));
> - cksum = table_compute_checksum(cksum_start,
> - le32_to_cpu(entry->cksum.length));
> - *data = cksum;
> -
> - return 0;
> -}
> -
> -/* This function loads and patches ACPI tables provided by QEMU */
> -ulong write_acpi_tables(ulong addr)
> -{
> - int i, ret;
> - struct fw_file *file;
> - struct bios_linker_entry *table_loader;
> - struct bios_linker_entry *entry;
> - uint32_t size;
> - struct udevice *dev;
> -
> - ret = qfw_get_dev(&dev);
> - if (ret) {
> - printf("error: no qfw\n");
> - return addr;
> - }
> -
> - /* make sure fw_list is loaded */
> - ret = qfw_read_firmware_list(dev);
> - if (ret) {
> - printf("error: can't read firmware file list\n");
> - return addr;
> - }
> -
> - file = qfw_find_file(dev, "etc/table-loader");
> - if (!file) {
> - printf("error: can't find etc/table-loader\n");
> - return addr;
> - }
> -
> - size = be32_to_cpu(file->cfg.size);
> - if ((size % sizeof(*entry)) != 0) {
> - printf("error: table-loader maybe corrupted\n");
> - return addr;
> - }
> -
> - table_loader = malloc(size);
> - if (!table_loader) {
> - printf("error: no memory for table-loader\n");
> - return addr;
> - }
> -
> - /* QFW always puts tables at high addresses */
> - gd->arch.table_start_high = (ulong)table_loader;
> - gd->arch.table_end_high = (ulong)table_loader;
> -
> - qfw_read_entry(dev, be16_to_cpu(file->cfg.select), size, table_loader);
> -
> - for (i = 0; i < (size / sizeof(*entry)); i++) {
> - entry = table_loader + i;
> - switch (le32_to_cpu(entry->command)) {
> - case BIOS_LINKER_LOADER_COMMAND_ALLOCATE:
> - ret = bios_linker_allocate(dev, entry, &addr);
> - if (ret)
> - goto out;
> - break;
> - case BIOS_LINKER_LOADER_COMMAND_ADD_POINTER:
> - ret = bios_linker_add_pointer(dev, entry);
> - if (ret)
> - goto out;
> - break;
> - case BIOS_LINKER_LOADER_COMMAND_ADD_CHECKSUM:
> - ret = bios_linker_add_checksum(dev, entry);
> - if (ret)
> - goto out;
> - break;
> - default:
> - break;
> - }
> - }
> -
> -out:
> - if (ret) {
> - struct fw_cfg_file_iter iter;
> - for (file = qfw_file_iter_init(dev, &iter);
> - !qfw_file_iter_end(&iter);
> - file = qfw_file_iter_next(&iter)) {
> - if (file->addr) {
> - free((void *)file->addr);
> - file->addr = 0;
> - }
> - }
> - }
> -
> - free(table_loader);
> -
> - gd_set_acpi_start(acpi_get_rsdp_addr());
> -
> - return addr;
> -}
> -
> -ulong acpi_get_rsdp_addr(void)
> -{
> - int ret;
> - struct fw_file *file;
> - struct udevice *dev;
> -
> - ret = qfw_get_dev(&dev);
> - if (ret) {
> - printf("error: no qfw\n");
> - return 0;
> - }
> -
> - file = qfw_find_file(dev, "etc/acpi/rsdp");
> - return file->addr;
> -}
> -#endif /* QFW_ACPI */
> -
> static void qfw_read_entry_io(struct qfw_dev *qdev, u16 entry, u32 size,
> void *address)
> {
> diff --git a/drivers/misc/qfw_acpi.c b/drivers/misc/qfw_acpi.c
> new file mode 100644
> index 0000000000..6e14b2a504
> --- /dev/null
> +++ b/drivers/misc/qfw_acpi.c
> @@ -0,0 +1,256 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * (C) Copyright 2015 Miao Yan <yanmiaobest at gmail.com>
> + * (C) Copyright 2021 Asherah Connor <ashe at kivikakk.ee>
> + */
> +
> +#define LOG_CATEGORY UCLASS_QFW
> +
> +#include <acpi/acpi_table.h>
> +#include <errno.h>
> +#include <malloc.h>
> +#include <qfw.h>
> +#include <tables_csum.h>
> +#include <stdio.h>
> +#include <asm/byteorder.h>
> +#include <asm/global_data.h>
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +/*
> + * This function allocates memory for ACPI tables
> + *
> + * @entry : BIOS linker command entry which tells where to allocate memory
> + * (either high memory or low memory)
> + * @addr : The address that should be used for low memory allcation. If the
> + * memory allocation request is 'ZONE_HIGH' then this parameter will
> + * be ignored.
> + * @return: 0 on success, or negative value on failure
> + */
> +static int bios_linker_allocate(struct udevice *dev,
> + struct bios_linker_entry *entry, ulong *addr)
> +{
> + uint32_t size, align;
> + struct fw_file *file;
> + unsigned long aligned_addr;
> +
> + align = le32_to_cpu(entry->alloc.align);
> + /* align must be power of 2 */
> + if (align & (align - 1)) {
> + printf("error: wrong alignment %u\n", align);
> + return -EINVAL;
> + }
> +
> + file = qfw_find_file(dev, entry->alloc.file);
> + if (!file) {
> + printf("error: can't find file %s\n", entry->alloc.file);
> + return -ENOENT;
> + }
> +
> + size = be32_to_cpu(file->cfg.size);
> +
> + /*
> + * ZONE_HIGH means we need to allocate from high memory, since
> + * malloc space is already at the end of RAM, so we directly use it.
> + * If allocation zone is ZONE_FSEG, then we use the 'addr' passed
> + * in which is low memory
> + */
> + if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_HIGH) {
> + aligned_addr = (unsigned long)memalign(align, size);
> + if (!aligned_addr) {
> + printf("error: allocating resource\n");
> + return -ENOMEM;
> + }
> + if (aligned_addr < gd->arch.table_start_high)
> + gd->arch.table_start_high = aligned_addr;
> + if (aligned_addr + size > gd->arch.table_end_high)
> + gd->arch.table_end_high = aligned_addr + size;
> +
> + } else if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_FSEG) {
> + aligned_addr = ALIGN(*addr, align);
> + } else {
> + printf("error: invalid allocation zone\n");
> + return -EINVAL;
> + }
> +
> + debug("bios_linker_allocate: allocate file %s, size %u, zone %d, align %u, addr 0x%lx\n",
> + file->cfg.name, size, entry->alloc.zone, align, aligned_addr);
> +
> + qfw_read_entry(dev, be16_to_cpu(file->cfg.select), size,
> + (void *)aligned_addr);
> + file->addr = aligned_addr;
> +
> + /* adjust address for low memory allocation */
> + if (entry->alloc.zone == BIOS_LINKER_LOADER_ALLOC_ZONE_FSEG)
> + *addr = (aligned_addr + size);
> +
> + return 0;
> +}
> +
> +/*
> + * This function patches ACPI tables previously loaded
> + * by bios_linker_allocate()
> + *
> + * @entry : BIOS linker command entry which tells how to patch
> + * ACPI tables
> + * @return: 0 on success, or negative value on failure
> + */
> +static int bios_linker_add_pointer(struct udevice *dev,
> + struct bios_linker_entry *entry)
> +{
> + struct fw_file *dest, *src;
> + uint32_t offset = le32_to_cpu(entry->pointer.offset);
> + uint64_t pointer = 0;
> +
> + dest = qfw_find_file(dev, entry->pointer.dest_file);
> + if (!dest || !dest->addr)
> + return -ENOENT;
> + src = qfw_find_file(dev, entry->pointer.src_file);
> + if (!src || !src->addr)
> + return -ENOENT;
> +
> + debug("bios_linker_add_pointer: dest->addr 0x%lx, src->addr 0x%lx, offset 0x%x size %u, 0x%llx\n",
> + dest->addr, src->addr, offset, entry->pointer.size, pointer);
> +
> + memcpy(&pointer, (char *)dest->addr + offset, entry->pointer.size);
> + pointer = le64_to_cpu(pointer);
> + pointer += (unsigned long)src->addr;
> + pointer = cpu_to_le64(pointer);
> + memcpy((char *)dest->addr + offset, &pointer, entry->pointer.size);
> +
> + return 0;
> +}
> +
> +/*
> + * This function updates checksum fields of ACPI tables previously loaded
> + * by bios_linker_allocate()
> + *
> + * @entry : BIOS linker command entry which tells where to update ACPI table
> + * checksums
> + * @return: 0 on success, or negative value on failure
> + */
> +static int bios_linker_add_checksum(struct udevice *dev,
> + struct bios_linker_entry *entry)
> +{
> + struct fw_file *file;
> + uint8_t *data, cksum = 0;
> + uint8_t *cksum_start;
> +
> + file = qfw_find_file(dev, entry->cksum.file);
> + if (!file || !file->addr)
> + return -ENOENT;
> +
> + data = (uint8_t *)(file->addr + le32_to_cpu(entry->cksum.offset));
> + cksum_start = (uint8_t *)(file->addr + le32_to_cpu(entry->cksum.start));
> + cksum = table_compute_checksum(cksum_start,
> + le32_to_cpu(entry->cksum.length));
> + *data = cksum;
> +
> + return 0;
> +}
> +
> +/* This function loads and patches ACPI tables provided by QEMU */
> +ulong write_acpi_tables(ulong addr)
> +{
> + int i, ret;
> + struct fw_file *file;
> + struct bios_linker_entry *table_loader;
> + struct bios_linker_entry *entry;
> + uint32_t size;
> + struct udevice *dev;
> +
> + ret = qfw_get_dev(&dev);
> + if (ret) {
> + printf("error: no qfw\n");
> + return addr;
> + }
> +
> + /* make sure fw_list is loaded */
> + ret = qfw_read_firmware_list(dev);
> + if (ret) {
> + printf("error: can't read firmware file list\n");
> + return addr;
> + }
> +
> + file = qfw_find_file(dev, "etc/table-loader");
> + if (!file) {
> + printf("error: can't find etc/table-loader\n");
> + return addr;
> + }
> +
> + size = be32_to_cpu(file->cfg.size);
> + if ((size % sizeof(*entry)) != 0) {
> + printf("error: table-loader maybe corrupted\n");
> + return addr;
> + }
> +
> + table_loader = malloc(size);
> + if (!table_loader) {
> + printf("error: no memory for table-loader\n");
> + return addr;
> + }
> +
> + /* QFW always puts tables at high addresses */
> + gd->arch.table_start_high = (ulong)table_loader;
> + gd->arch.table_end_high = (ulong)table_loader;
> +
> + qfw_read_entry(dev, be16_to_cpu(file->cfg.select), size, table_loader);
> +
> + for (i = 0; i < (size / sizeof(*entry)); i++) {
> + entry = table_loader + i;
> + switch (le32_to_cpu(entry->command)) {
> + case BIOS_LINKER_LOADER_COMMAND_ALLOCATE:
> + ret = bios_linker_allocate(dev, entry, &addr);
> + if (ret)
> + goto out;
> + break;
> + case BIOS_LINKER_LOADER_COMMAND_ADD_POINTER:
> + ret = bios_linker_add_pointer(dev, entry);
> + if (ret)
> + goto out;
> + break;
> + case BIOS_LINKER_LOADER_COMMAND_ADD_CHECKSUM:
> + ret = bios_linker_add_checksum(dev, entry);
> + if (ret)
> + goto out;
> + break;
> + default:
> + break;
> + }
> + }
> +
> +out:
> + if (ret) {
> + struct fw_cfg_file_iter iter;
> + for (file = qfw_file_iter_init(dev, &iter);
> + !qfw_file_iter_end(&iter);
> + file = qfw_file_iter_next(&iter)) {
> + if (file->addr) {
> + free((void *)file->addr);
> + file->addr = 0;
> + }
> + }
> + }
> +
> + free(table_loader);
> +
> + gd_set_acpi_start(acpi_get_rsdp_addr());
> +
> + return addr;
> +}
> +
> +ulong acpi_get_rsdp_addr(void)
> +{
> + int ret;
> + struct fw_file *file;
> + struct udevice *dev;
> +
> + ret = qfw_get_dev(&dev);
> + if (ret) {
> + printf("error: no qfw\n");
> + return 0;
> + }
> +
> + file = qfw_find_file(dev, "etc/acpi/rsdp");
> + return file->addr;
> +}
> --
> 2.40.1
>
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