region: Add writeat and eraseat support
Implement writeat and eraseat support into the region_device_ops struct. Change-Id: Iac2cf32e523d2f19ee9e5feefe1fba8c68982f3d Signed-off-by: Antonello Dettori <dev@dettori.io> Reviewed-on: https://review.coreboot.org/15318 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
parent
5992afa57d
commit
e5f48d20e7
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@ -18,7 +18,7 @@
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/* This assumes that the CBFS resides at 0x0, which is true for the default
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* configuration. */
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static const struct mem_region_device boot_dev =
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MEM_REGION_DEV_INIT(NULL, CONFIG_ROM_SIZE);
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MEM_REGION_DEV_RO_INIT(NULL, CONFIG_ROM_SIZE);
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const struct region_device *boot_device_ro(void)
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{
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@ -18,7 +18,7 @@
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/* This assumes that the CBFS resides at 0x0, which is true for the default
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* configuration. */
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static const struct mem_region_device boot_dev =
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MEM_REGION_DEV_INIT(NULL, CONFIG_ROM_SIZE);
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MEM_REGION_DEV_RO_INIT(NULL, CONFIG_ROM_SIZE);
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const struct region_device *boot_device_ro(void)
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{
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@ -22,7 +22,7 @@
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#define rom_base ((void *)(uintptr_t)(0x100000000ULL-CONFIG_ROM_SIZE))
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static const struct mem_region_device boot_dev =
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MEM_REGION_DEV_INIT(rom_base, CONFIG_ROM_SIZE);
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MEM_REGION_DEV_RO_INIT(rom_base, CONFIG_ROM_SIZE);
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const struct region_device *boot_device_ro(void)
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{
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@ -48,6 +48,20 @@ int rdev_munmap(const struct region_device *rd, void *mapping);
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ssize_t rdev_readat(const struct region_device *rd, void *b, size_t offset,
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size_t size);
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/*
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* Returns < 0 on error otherwise returns size of data wrote at provided
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* offset from the buffer passed.
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*/
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ssize_t rdev_writeat(const struct region_device *rd, void *b, size_t offset,
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size_t size);
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/*
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* Returns < 0 on error otherwise returns size of data erased.
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* If eraseat ops is not defined it returns size which indicates
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* that operation was successful.
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*/
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ssize_t rdev_eraseat(const struct region_device *rd, size_t offset,
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size_t size);
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/****************************************
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* Implementation of a region device *
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@ -67,6 +81,9 @@ struct region_device_ops {
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void *(*mmap)(const struct region_device *, size_t, size_t);
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int (*munmap)(const struct region_device *, void *);
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ssize_t (*readat)(const struct region_device *, void *, size_t, size_t);
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ssize_t (*writeat)(const struct region_device *, void *, size_t,
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size_t);
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ssize_t (*eraseat)(const struct region_device *, size_t, size_t);
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};
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struct region {
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@ -139,20 +156,32 @@ struct mem_region_device {
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struct region_device rdev;
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};
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/* Iniitalize at runtime a mem_region_device. This would be used when
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* the base and size are dynamic or can't be known during linking. */
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void mem_region_device_init(struct mem_region_device *mdev, void *base,
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/* Inititalize at runtime a mem_region_device. This would be used when
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* the base and size are dynamic or can't be known during linking.
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* There are two variants: read-only and read-write. */
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void mem_region_device_ro_init(struct mem_region_device *mdev, void *base,
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size_t size);
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extern const struct region_device_ops mem_rdev_ops;
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void mem_region_device_rw_init(struct mem_region_device *mdev, void *base,
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size_t size);
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extern const struct region_device_ops mem_rdev_ro_ops;
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extern const struct region_device_ops mem_rdev_rw_ops;
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/* Statically initialize mem_region_device. */
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#define MEM_REGION_DEV_INIT(base_, size_) \
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#define MEM_REGION_DEV_INIT(base_, size_, ops_) \
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{ \
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.base = (void *)(base_), \
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.rdev = REGION_DEV_INIT(&mem_rdev_ops, 0, (size_)), \
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.rdev = REGION_DEV_INIT((ops_), 0, (size_)), \
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}
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#define MEM_REGION_DEV_RO_INIT(base_, size_) \
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MEM_REGION_DEV_INIT(base_, size_, &mem_rdev_ro_ops) \
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#define MEM_REGION_DEV_RW_INIT(base_, size_) \
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MEM_REGION_DEV_INIT(base_, size_, &mem_rdev_rw_ops) \
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struct mmap_helper_region_device {
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struct mem_pool pool;
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struct region_device rdev;
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@ -170,7 +199,7 @@ void *mmap_helper_rdev_mmap(const struct region_device *, size_t, size_t);
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int mmap_helper_rdev_munmap(const struct region_device *, void *);
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/* A translated region device provides the ability to publish a region device
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* in one address space and use an access mechansim within another address
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* in one address space and use an access mechanism within another address
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* space. The sub region is the window within the 1st address space and
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* the request is modified prior to accessing the second address space
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* provided by access_dev. */
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@ -180,20 +209,38 @@ struct xlate_region_device {
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struct region_device rdev;
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};
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extern const struct region_device_ops xlate_rdev_ops;
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extern const struct region_device_ops xlate_rdev_ro_ops;
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#define XLATE_REGION_DEV_INIT(access_dev_, sub_offset_, sub_size_, parent_sz_) \
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extern const struct region_device_ops xlate_rdev_rw_ops;
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#define XLATE_REGION_DEV_INIT(access_dev_, sub_offset_, sub_size_, \
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parent_sz_, ops_) \
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{ \
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.access_dev = access_dev_, \
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.sub_region = { \
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.offset = (sub_offset_), \
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.size = (sub_size_), \
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}, \
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.rdev = REGION_DEV_INIT(&xlate_rdev_ops, 0, (parent_sz_)),\
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.rdev = REGION_DEV_INIT((ops_), 0, (parent_sz_)), \
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}
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#define XLATE_REGION_DEV_RO_INIT(access_dev_, sub_offset_, sub_size_, \
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parent_sz_) \
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XLATE_REGION_DEV_INIT(access_dev_, sub_offset_, \
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sub_size_, parent_sz_, &xlate_rdev_ro_ops), \
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#define XLATE_REGION_DEV_RW_INIT(access_dev_, sub_offset_, sub_size_, \
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parent_sz_) \
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XLATE_REGION_DEV_INIT(access_dev_, sub_offset_, \
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sub_size_, parent_sz_, &xlate_rdev_rw_ops), \
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/* Helper to dynamically initialize xlate region device. */
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void xlate_region_device_init(struct xlate_region_device *xdev,
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void xlate_region_device_ro_init(struct xlate_region_device *xdev,
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const struct region_device *access_dev,
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size_t sub_offset, size_t sub_size,
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size_t parent_size);
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void xlate_region_device_rw_init(struct xlate_region_device *xdev,
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const struct region_device *access_dev,
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size_t sub_offset, size_t sub_size,
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size_t parent_size);
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@ -103,6 +103,48 @@ ssize_t rdev_readat(const struct region_device *rd, void *b, size_t offset,
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return rdev->ops->readat(rdev, b, req.offset, req.size);
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}
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ssize_t rdev_writeat(const struct region_device *rd, void *b, size_t offset,
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size_t size)
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{
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const struct region_device *rdev;
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struct region req = {
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.offset = offset,
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.size = size,
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};
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if (!normalize_and_ok(&rd->region, &req))
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return -1;
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rdev = rdev_root(rd);
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if (rdev->ops->writeat == NULL)
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return -1;
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return rdev->ops->writeat(rdev, b, req.offset, req.size);
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}
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ssize_t rdev_eraseat(const struct region_device *rd, size_t offset,
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size_t size)
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{
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const struct region_device *rdev;
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struct region req = {
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.offset = offset,
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.size = size,
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};
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if (!normalize_and_ok(&rd->region, &req))
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return -1;
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rdev = rdev_root(rd);
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/* If the eraseat ptr is NULL we assume that the erase
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* function was completed successfully. */
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if (rdev->ops->eraseat == NULL)
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return size;
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return rdev->ops->eraseat(rdev, req.offset, req.size);
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}
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int rdev_chain(struct region_device *child, const struct region_device *parent,
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size_t offset, size_t size)
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{
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@ -124,15 +166,27 @@ int rdev_chain(struct region_device *child, const struct region_device *parent,
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return 0;
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}
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void mem_region_device_init(struct mem_region_device *mdev, void *base,
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size_t size)
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static void mem_region_device_init(struct mem_region_device *mdev,
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const struct region_device_ops *ops, void *base, size_t size)
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{
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memset(mdev, 0, sizeof(*mdev));
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mdev->base = base;
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mdev->rdev.ops = &mem_rdev_ops;
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mdev->rdev.ops = ops;
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mdev->rdev.region.size = size;
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}
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void mem_region_device_ro_init(struct mem_region_device *mdev, void *base,
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size_t size)
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{
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return mem_region_device_init(mdev, &mem_rdev_ro_ops, base, size);
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}
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void mem_region_device_rw_init(struct mem_region_device *mdev, void *base,
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size_t size)
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{
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return mem_region_device_init(mdev, &mem_rdev_rw_ops, base, size);
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}
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void region_device_init(struct region_device *rdev,
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const struct region_device_ops *ops, size_t offset,
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size_t size)
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rdev->region.size = size;
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}
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void xlate_region_device_init(struct xlate_region_device *xdev,
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static void xlate_region_device_init(struct xlate_region_device *xdev,
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const struct region_device_ops *ops,
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const struct region_device *access_dev,
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size_t sub_offset, size_t sub_size,
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size_t parent_size)
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xdev->access_dev = access_dev;
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xdev->sub_region.offset = sub_offset;
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xdev->sub_region.size = sub_size;
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region_device_init(&xdev->rdev, &xlate_rdev_ops, 0, parent_size);
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region_device_init(&xdev->rdev, ops, 0, parent_size);
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}
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void xlate_region_device_ro_init(struct xlate_region_device *xdev,
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const struct region_device *access_dev,
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size_t sub_offset, size_t sub_size,
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size_t parent_size)
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{
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xlate_region_device_init(xdev, &xlate_rdev_ro_ops, access_dev,
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sub_offset, sub_size, parent_size);
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}
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void xlate_region_device_rw_init(struct xlate_region_device *xdev,
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const struct region_device *access_dev,
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size_t sub_offset, size_t sub_size,
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size_t parent_size)
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{
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xlate_region_device_init(xdev, &xlate_rdev_rw_ops, access_dev,
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sub_offset, sub_size, parent_size);
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}
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static void *mdev_mmap(const struct region_device *rd, size_t offset,
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return size;
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}
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const struct region_device_ops mem_rdev_ops = {
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static ssize_t mdev_writeat(const struct region_device *rd, void *b,
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size_t offset, size_t size)
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{
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const struct mem_region_device *mdev;
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mdev = container_of(rd, __typeof__(*mdev), rdev);
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memcpy(&mdev->base[offset], b, size);
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return size;
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}
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static ssize_t mdev_eraseat(const struct region_device *rd, size_t offset,
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size_t size)
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{
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const struct mem_region_device *mdev;
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mdev = container_of(rd, __typeof__(*mdev), rdev);
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memset(&mdev->base[offset], 0, size);
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return size;
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}
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const struct region_device_ops mem_rdev_ro_ops = {
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.mmap = mdev_mmap,
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.munmap = mdev_munmap,
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.readat = mdev_readat,
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};
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const struct region_device_ops mem_rdev_rw_ops = {
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.mmap = mdev_mmap,
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.munmap = mdev_munmap,
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.readat = mdev_readat,
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.writeat = mdev_writeat,
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.eraseat = mdev_eraseat,
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};
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void mmap_helper_device_init(struct mmap_helper_region_device *mdev,
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void *cache, size_t cache_size)
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{
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return rdev_readat(xldev->access_dev, b, offset, size);
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}
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const struct region_device_ops xlate_rdev_ops = {
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static ssize_t xlate_writeat(const struct region_device *rd, void *b,
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size_t offset, size_t size)
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{
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struct region req = {
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.offset = offset,
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.size = size,
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};
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const struct xlate_region_device *xldev;
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xldev = container_of(rd, __typeof__(*xldev), rdev);
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if (!is_subregion(&xldev->sub_region, &req))
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return -1;
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offset -= region_offset(&xldev->sub_region);
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return rdev_writeat(xldev->access_dev, b, offset, size);
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}
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static ssize_t xlate_eraseat(const struct region_device *rd,
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size_t offset, size_t size)
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{
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struct region req = {
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.offset = offset,
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.size = size,
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};
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const struct xlate_region_device *xldev;
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xldev = container_of(rd, __typeof__(*xldev), rdev);
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if (!is_subregion(&xldev->sub_region, &req))
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return -1;
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offset -= region_offset(&xldev->sub_region);
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return rdev_eraseat(xldev->access_dev, offset, size);
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}
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const struct region_device_ops xlate_rdev_ro_ops = {
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.mmap = xlate_mmap,
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.munmap = xlate_munmap,
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.readat = xlate_readat,
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};
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const struct region_device_ops xlate_rdev_rw_ops = {
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.mmap = xlate_mmap,
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.munmap = xlate_munmap,
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.readat = xlate_readat,
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.writeat = xlate_writeat,
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.eraseat = xlate_eraseat,
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};
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/* FIXME: No idea how big the internal SRAM actually is. */
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static const struct mem_region_device boot_dev =
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MEM_REGION_DEV_INIT(_dram, CONFIG_ROM_SIZE);
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MEM_REGION_DEV_RO_INIT(_dram, CONFIG_ROM_SIZE);
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const struct region_device *boot_device_ro(void)
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{
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#include <timestamp.h>
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/* Only can represent up to 1 byte less than size_t. */
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const struct mem_region_device addrspace_32bit = MEM_REGION_DEV_INIT(0, ~0UL);
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const struct mem_region_device addrspace_32bit =
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MEM_REGION_DEV_RO_INIT(0, ~0UL);
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int prog_locate(struct prog *prog)
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{
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/* Maps directly to NOR flash up to rom size. */
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static const struct mem_region_device boot_dev =
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MEM_REGION_DEV_INIT((void *)0x0, CONFIG_ROM_SIZE);
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MEM_REGION_DEV_RO_INIT((void *)0x0, CONFIG_ROM_SIZE);
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const struct region_device *boot_device_ro(void)
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{
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@ -102,10 +102,10 @@ static void bios_mmap_init(void)
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shadow_dev_ptr = car_get_var_ptr(&shadow_dev);
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real_dev_ptr = car_get_var_ptr(&real_dev);
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mem_region_device_init(shadow_dev_ptr, (void *)base,
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mem_region_device_ro_init(shadow_dev_ptr, (void *)base,
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bios_mapped_size);
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xlate_region_device_init(real_dev_ptr, &shadow_dev_ptr->rdev,
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xlate_region_device_ro_init(real_dev_ptr, &shadow_dev_ptr->rdev,
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start, bios_mapped_size,
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CONFIG_ROM_SIZE);
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@ -108,7 +108,8 @@ static int sdmmc_cbfs_open(void)
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return 0;
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}
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static struct mem_region_device alternate_rdev = MEM_REGION_DEV_INIT(NULL, 0);
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static struct mem_region_device alternate_rdev =
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MEM_REGION_DEV_RO_INIT(NULL, 0);
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const struct region_device *boot_device_ro(void)
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{
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@ -129,7 +130,8 @@ const struct region_device *boot_device_ro(void)
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void boot_device_init(void)
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{
|
||||
mem_region_device_init(&alternate_rdev, _cbfs_cache, _cbfs_cache_size);
|
||||
mem_region_device_ro_init(&alternate_rdev, _cbfs_cache,
|
||||
_cbfs_cache_size);
|
||||
|
||||
if (*iram_secondary_base == SECONDARY_BASE_BOOT_USB) {
|
||||
printk(BIOS_DEBUG, "Using Exynos alternate boot mode USB A-A\n");
|
||||
|
|
|
@ -115,7 +115,8 @@ static int sdmmc_cbfs_open(void)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static struct mem_region_device alternate_rdev = MEM_REGION_DEV_INIT(NULL, 0);
|
||||
static struct mem_region_device alternate_rdev =
|
||||
MEM_REGION_DEV_RO_INIT(NULL, 0);
|
||||
|
||||
const struct region_device *boot_device_ro(void)
|
||||
{
|
||||
|
@ -136,7 +137,8 @@ const struct region_device *boot_device_ro(void)
|
|||
|
||||
void boot_device_init(void)
|
||||
{
|
||||
mem_region_device_init(&alternate_rdev, _cbfs_cache, _cbfs_cache_size);
|
||||
mem_region_device_ro_init(&alternate_rdev, _cbfs_cache,
|
||||
_cbfs_cache_size);
|
||||
|
||||
if (*iram_secondary_base == SECONDARY_BASE_BOOT_USB) {
|
||||
printk(BIOS_DEBUG, "Using Exynos alternate boot mode USB A-A\n");
|
||||
|
|
Loading…
Reference in New Issue