mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-01 00:49:43 +00:00
27a66fc3f3
Move the code related to copying tables from QEMU to a separate code module. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
178 lines
4 KiB
C
178 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
|
|
* (C) Copyright 2021 Asherah Connor <ashe@kivikakk.ee>
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_QFW
|
|
|
|
#include <common.h>
|
|
#include <acpi/acpi_table.h>
|
|
#include <bootdev.h>
|
|
#include <bootflow.h>
|
|
#include <bootmeth.h>
|
|
#include <command.h>
|
|
#include <errno.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <qfw.h>
|
|
#include <dm.h>
|
|
#include <misc.h>
|
|
#include <tables_csum.h>
|
|
#include <asm/acpi_table.h>
|
|
|
|
static void qfw_read_entry_io(struct qfw_dev *qdev, u16 entry, u32 size,
|
|
void *address)
|
|
{
|
|
struct dm_qfw_ops *ops = dm_qfw_get_ops(qdev->dev);
|
|
|
|
debug("%s: entry 0x%x, size %u address %p\n", __func__, entry, size,
|
|
address);
|
|
|
|
ops->read_entry_io(qdev->dev, entry, size, address);
|
|
}
|
|
|
|
static void qfw_read_entry_dma(struct qfw_dev *qdev, u16 entry, u32 size,
|
|
void *address)
|
|
{
|
|
struct dm_qfw_ops *ops = dm_qfw_get_ops(qdev->dev);
|
|
|
|
struct qfw_dma dma = {
|
|
.length = cpu_to_be32(size),
|
|
.address = cpu_to_be64((uintptr_t)address),
|
|
.control = cpu_to_be32(FW_CFG_DMA_READ),
|
|
};
|
|
|
|
/*
|
|
* writing FW_CFG_INVALID will cause read operation to resume at last
|
|
* offset, otherwise read will start at offset 0
|
|
*/
|
|
if (entry != FW_CFG_INVALID)
|
|
dma.control |= cpu_to_be32(FW_CFG_DMA_SELECT | (entry << 16));
|
|
|
|
debug("%s: entry 0x%x, size %u address %p, control 0x%x\n", __func__,
|
|
entry, size, address, be32_to_cpu(dma.control));
|
|
|
|
barrier();
|
|
|
|
ops->read_entry_dma(qdev->dev, &dma);
|
|
}
|
|
|
|
void qfw_read_entry(struct udevice *dev, u16 entry, u32 size, void *address)
|
|
{
|
|
struct qfw_dev *qdev = dev_get_uclass_priv(dev);
|
|
|
|
if (qdev->dma_present)
|
|
qfw_read_entry_dma(qdev, entry, size, address);
|
|
else
|
|
qfw_read_entry_io(qdev, entry, size, address);
|
|
}
|
|
|
|
int qfw_register(struct udevice *dev)
|
|
{
|
|
struct qfw_dev *qdev = dev_get_uclass_priv(dev);
|
|
u32 qemu, dma_enabled;
|
|
|
|
qdev->dev = dev;
|
|
INIT_LIST_HEAD(&qdev->fw_list);
|
|
|
|
qfw_read_entry_io(qdev, FW_CFG_SIGNATURE, 4, &qemu);
|
|
if (be32_to_cpu(qemu) != QEMU_FW_CFG_SIGNATURE)
|
|
return -ENODEV;
|
|
|
|
qfw_read_entry_io(qdev, FW_CFG_ID, 1, &dma_enabled);
|
|
if (dma_enabled & FW_CFG_DMA_ENABLED)
|
|
qdev->dma_present = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qfw_post_bind(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = bootdev_setup_for_dev(dev, "qfw_bootdev");
|
|
if (ret)
|
|
return log_msg_ret("dev", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qfw_get_bootflow(struct udevice *dev, struct bootflow_iter *iter,
|
|
struct bootflow *bflow)
|
|
{
|
|
const struct udevice *media = dev_get_parent(dev);
|
|
int ret;
|
|
|
|
if (!CONFIG_IS_ENABLED(BOOTSTD))
|
|
return -ENOSYS;
|
|
|
|
log_debug("media=%s\n", media->name);
|
|
ret = bootmeth_check(bflow->method, iter);
|
|
if (ret)
|
|
return log_msg_ret("check", ret);
|
|
|
|
log_debug("iter->part=%d\n", iter->part);
|
|
|
|
/* We only support the whole device, not partitions */
|
|
if (iter->part)
|
|
return log_msg_ret("max", -ESHUTDOWN);
|
|
|
|
log_debug("reading bootflow with method: %s\n", bflow->method->name);
|
|
ret = bootmeth_read_bootflow(bflow->method, bflow);
|
|
if (ret)
|
|
return log_msg_ret("method", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qfw_bootdev_bind(struct udevice *dev)
|
|
{
|
|
struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
|
|
|
|
ucp->prio = BOOTDEVP_4_SCAN_FAST;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qfw_bootdev_hunt(struct bootdev_hunter *info, bool show)
|
|
{
|
|
int ret;
|
|
|
|
ret = uclass_probe_all(UCLASS_QFW);
|
|
if (ret && ret != -ENOENT)
|
|
return log_msg_ret("vir", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(qfw) = {
|
|
.id = UCLASS_QFW,
|
|
.name = "qfw",
|
|
.post_bind = qfw_post_bind,
|
|
.per_device_auto = sizeof(struct qfw_dev),
|
|
};
|
|
|
|
struct bootdev_ops qfw_bootdev_ops = {
|
|
.get_bootflow = qfw_get_bootflow,
|
|
};
|
|
|
|
static const struct udevice_id qfw_bootdev_ids[] = {
|
|
{ .compatible = "u-boot,bootdev-qfw" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(qfw_bootdev) = {
|
|
.name = "qfw_bootdev",
|
|
.id = UCLASS_BOOTDEV,
|
|
.ops = &qfw_bootdev_ops,
|
|
.bind = qfw_bootdev_bind,
|
|
.of_match = qfw_bootdev_ids,
|
|
};
|
|
|
|
BOOTDEV_HUNTER(qfw_bootdev_hunter) = {
|
|
.prio = BOOTDEVP_4_SCAN_FAST,
|
|
.uclass = UCLASS_QFW,
|
|
.hunt = qfw_bootdev_hunt,
|
|
.drv = DM_DRIVER_REF(qfw_bootdev),
|
|
};
|