mips: octeon: Add bootmem support
This is needed for Linux booting, as the memory infos need to be passed
in this bootmem format to the Linux kernel.
Signed-off-by: Aaron Williams <awilliams@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/mips/mach-octeon/include/mach/cvmx-bootmem.h b/arch/mips/mach-octeon/include/mach/cvmx-bootmem.h
new file mode 100644
index 0000000..d60668c
--- /dev/null
+++ b/arch/mips/mach-octeon/include/mach/cvmx-bootmem.h
@@ -0,0 +1,533 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Marvell International Ltd.
+ */
+
+/**
+ * @file
+ * Simple allocate only memory allocator. Used to allocate memory at application
+ * start time.
+ */
+
+#ifndef __CVMX_BOOTMEM_H__
+#define __CVMX_BOOTMEM_H__
+
+/* Must be multiple of 8, changing breaks ABI */
+#define CVMX_BOOTMEM_NAME_LEN 128
+/* Can change without breaking ABI */
+#define CVMX_BOOTMEM_NUM_NAMED_BLOCKS 64
+/* minimum alignment of bootmem alloced blocks */
+#define CVMX_BOOTMEM_ALIGNMENT_SIZE (16ull)
+
+/* Flags for cvmx_bootmem_phy_mem* functions */
+/* Allocate from end of block instead of beginning */
+#define CVMX_BOOTMEM_FLAG_END_ALLOC (1 << 0)
+#define CVMX_BOOTMEM_FLAG_NO_LOCKING (1 << 1) /* Don't do any locking. */
+
+/* Real physical addresses of memory regions */
+#define OCTEON_DDR0_BASE (0x0ULL)
+#define OCTEON_DDR0_SIZE (0x010000000ULL)
+#define OCTEON_DDR1_BASE ((OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3()) \
+ ? 0x20000000ULL : 0x410000000ULL)
+#define OCTEON_DDR1_SIZE (0x010000000ULL)
+#define OCTEON_DDR2_BASE ((OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3()) \
+ ? 0x30000000ULL : 0x20000000ULL)
+#define OCTEON_DDR2_SIZE ((OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3()) \
+ ? 0x7d0000000ULL : 0x3e0000000ULL)
+#define OCTEON_MAX_PHY_MEM_SIZE ((OCTEON_IS_MODEL(OCTEON_CN68XX)) \
+ ? 128 * 1024 * 1024 * 1024ULL \
+ : (OCTEON_IS_OCTEON2()) \
+ ? 32 * 1024 * 1024 * 1024ull \
+ : (OCTEON_IS_OCTEON3()) \
+ ? 512 * 1024 * 1024 * 1024ULL \
+ : 16 * 1024 * 1024 * 1024ULL)
+
+/*
+ * First bytes of each free physical block of memory contain this structure,
+ * which is used to maintain the free memory list. Since the bootloader is
+ * only 32 bits, there is a union providing 64 and 32 bit versions. The
+ * application init code converts addresses to 64 bit addresses before the
+ * application starts.
+ */
+struct cvmx_bootmem_block_header {
+ /* Note: these are referenced from assembly routines in the bootloader,
+ * so this structure should not be changed without changing those
+ * routines as well.
+ */
+ u64 next_block_addr;
+ u64 size;
+
+};
+
+/*
+ * Structure for named memory blocks
+ * Number of descriptors
+ * available can be changed without affecting compatibility,
+ * but name length changes require a bump in the bootmem
+ * descriptor version
+ * Note: This structure must be naturally 64 bit aligned, as a single
+ * memory image will be used by both 32 and 64 bit programs.
+ */
+struct cvmx_bootmem_named_block_desc {
+ u64 base_addr; /* Base address of named block */
+ /*
+ * Size actually allocated for named block (may differ from requested)
+ */
+ u64 size;
+ char name[CVMX_BOOTMEM_NAME_LEN]; /* name of named block */
+};
+
+/* Current descriptor versions */
+/* CVMX bootmem descriptor major version */
+#define CVMX_BOOTMEM_DESC_MAJ_VER 3
+/* CVMX bootmem descriptor minor version */
+#define CVMX_BOOTMEM_DESC_MIN_VER 0
+
+/*
+ * First three members of cvmx_bootmem_desc_t are left in original
+ * positions for backwards compatibility.
+ */
+struct cvmx_bootmem_desc {
+ /* Linux compatible proxy for __BIG_ENDIAN */
+ u32 lock; /* spinlock to control access to list */
+ u32 flags; /* flags for indicating various conditions */
+ u64 head_addr;
+
+ /* incremented changed when incompatible changes made */
+ u32 major_version;
+ /*
+ * incremented changed when compatible changes made, reset to
+ * zero when major incremented
+ */
+ u32 minor_version;
+ u64 app_data_addr;
+ u64 app_data_size;
+
+ /* number of elements in named blocks array */
+ u32 named_block_num_blocks;
+ /* length of name array in bootmem blocks */
+ u32 named_block_name_len;
+ /* address of named memory block descriptors */
+ u64 named_block_array_addr;
+};
+
+/**
+ * Initialize the boot alloc memory structures. This is
+ * normally called inside of cvmx_user_app_init()
+ *
+ * @param mem_desc_addr Address of the free memory list
+ * @return
+ */
+int cvmx_bootmem_init(u64 mem_desc_addr);
+
+/**
+ * Allocate a block of memory from the free list that was passed
+ * to the application by the bootloader.
+ * This is an allocate-only algorithm, so freeing memory is not possible.
+ *
+ * @param size Size in bytes of block to allocate
+ * @param alignment Alignment required - must be power of 2
+ *
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc(u64 size, u64 alignment);
+
+/**
+ * Allocate a block of memory from the free list that was passed
+ * to the application by the bootloader from a specific node.
+ * This is an allocate-only algorithm, so freeing memory is not possible.
+ *
+ * @param node The node to allocate memory from
+ * @param size Size in bytes of block to allocate
+ * @param alignment Alignment required - must be power of 2
+ *
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc_node(u64 node, u64 size, u64 alignment);
+
+/**
+ * Allocate a block of memory from the free list that was
+ * passed to the application by the bootloader at a specific
+ * address. This is an allocate-only algorithm, so
+ * freeing memory is not possible. Allocation will fail if
+ * memory cannot be allocated at the specified address.
+ *
+ * @param size Size in bytes of block to allocate
+ * @param address Physical address to allocate memory at. If this
+ * memory is not available, the allocation fails.
+ * @param alignment Alignment required - must be power of 2
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc_address(u64 size, u64 address,
+ u64 alignment);
+
+/**
+ * Allocate a block of memory from the free list that was
+ * passed to the application by the bootloader within a specified
+ * address range. This is an allocate-only algorithm, so
+ * freeing memory is not possible. Allocation will fail if
+ * memory cannot be allocated in the requested range.
+ *
+ * @param size Size in bytes of block to allocate
+ * @param min_addr defines the minimum address of the range
+ * @param max_addr defines the maximum address of the range
+ * @param alignment Alignment required - must be power of 2
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc_range(u64 size, u64 alignment,
+ u64 min_addr, u64 max_addr);
+
+/**
+ * Allocate a block of memory from the free list that was passed
+ * to the application by the bootloader, and assign it a name in the
+ * global named block table. (part of the cvmx_bootmem_descriptor_t structure)
+ * Named blocks can later be freed.
+ *
+ * @param size Size in bytes of block to allocate
+ * @param alignment Alignment required - must be power of 2
+ * @param name name of block - must be less than CVMX_BOOTMEM_NAME_LEN bytes
+ *
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc_named(u64 size, u64 alignment,
+ const char *name);
+
+/**
+ * Allocate a block of memory from the free list that was passed
+ * to the application by the bootloader, and assign it a name in the
+ * global named block table. (part of the cvmx_bootmem_descriptor_t structure)
+ * Named blocks can later be freed.
+ *
+ * @param size Size in bytes of block to allocate
+ * @param alignment Alignment required - must be power of 2
+ * @param name name of block - must be less than CVMX_BOOTMEM_NAME_LEN bytes
+ * @param flags Flags to control options for the allocation.
+ *
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc_named_flags(u64 size, u64 alignment,
+ const char *name, u32 flags);
+
+/**
+ * Allocate a block of memory from the free list that was passed
+ * to the application by the bootloader, and assign it a name in the
+ * global named block table. (part of the cvmx_bootmem_descriptor_t structure)
+ * Named blocks can later be freed.
+ *
+ * @param size Size in bytes of block to allocate
+ * @param address Physical address to allocate memory at. If this
+ * memory is not available, the allocation fails.
+ * @param name name of block - must be less than CVMX_BOOTMEM_NAME_LEN bytes
+ *
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc_named_address(u64 size, u64 address,
+ const char *name);
+
+/**
+ * Allocate a block of memory from a specific range of the free list
+ * that was passed to the application by the bootloader, and assign it
+ * a name in the global named block table. (part of the
+ * cvmx_bootmem_descriptor_t structure) Named blocks can later be
+ * freed. If request cannot be satisfied within the address range
+ * specified, NULL is returned
+ *
+ * @param size Size in bytes of block to allocate
+ * @param min_addr minimum address of range
+ * @param max_addr maximum address of range
+ * @param align Alignment of memory to be allocated. (must be a power of 2)
+ * @param name name of block - must be less than CVMX_BOOTMEM_NAME_LEN bytes
+ *
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc_named_range(u64 size, u64 min_addr,
+ u64 max_addr, u64 align,
+ const char *name);
+
+/**
+ * Allocate if needed a block of memory from a specific range of the
+ * free list that was passed to the application by the bootloader, and
+ * assign it a name in the global named block table. (part of the
+ * cvmx_bootmem_descriptor_t structure) Named blocks can later be
+ * freed. If the requested name block is already allocated, return
+ * the pointer to block of memory. If request cannot be satisfied
+ * within the address range specified, NULL is returned
+ *
+ * @param size Size in bytes of block to allocate
+ * @param min_addr minimum address of range
+ * @param max_addr maximum address of range
+ * @param align Alignment of memory to be allocated. (must be a power of 2)
+ * @param name name of block - must be less than CVMX_BOOTMEM_NAME_LEN bytes
+ * @param init Initialization function
+ *
+ * The initialization function is optional, if omitted the named block
+ * is initialized to all zeros when it is created, i.e. once.
+ *
+ * @return pointer to block of memory, NULL on error
+ */
+void *cvmx_bootmem_alloc_named_range_once(u64 size,
+ u64 min_addr,
+ u64 max_addr,
+ u64 align,
+ const char *name,
+ void (*init)(void *));
+
+/**
+ * Allocate all free memory starting at the start address. This is used to
+ * prevent any free blocks from later being allocated within the reserved space.
+ * Note that any memory allocated with this function cannot be later freed.
+ *
+ * @param start_addr Starting address to reserve
+ * @param size Size in bytes to reserve starting at start_addr
+ * @param name Name to assign to reserved blocks
+ * @param flags Flags to use when reserving memory
+ *
+ * @return 0 on failure,
+ * !0 on success
+ */
+int cvmx_bootmem_reserve_memory(u64 start_addr, u64 size,
+ const char *name, u32 flags);
+
+/**
+ * Frees a previously allocated named bootmem block.
+ *
+ * @param name name of block to free
+ *
+ * @return 0 on failure,
+ * !0 on success
+ */
+int cvmx_bootmem_free_named(const char *name);
+
+/**
+ * Finds a named bootmem block by name.
+ *
+ * @param name name of block to free
+ *
+ * @return pointer to named block descriptor on success
+ * 0 on failure
+ */
+const struct cvmx_bootmem_named_block_desc *
+cvmx_bootmem_find_named_block(const char *name);
+
+/**
+ * Returns the size of available memory in bytes, only
+ * counting blocks that are at least as big as the minimum block
+ * size.
+ *
+ * @param min_block_size
+ * Minimum block size to count in total.
+ *
+ * @return Number of bytes available for allocation that meet the
+ * block size requirement
+ */
+u64 cvmx_bootmem_available_mem(u64 min_block_size);
+
+/**
+ * Prints out the list of named blocks that have been allocated
+ * along with their addresses and sizes.
+ * This is primarily used for debugging purposes
+ */
+void cvmx_bootmem_print_named(void);
+
+/**
+ * Allocates a block of physical memory from the free list, at
+ * (optional) requested address and alignment.
+ *
+ * @param req_size size of region to allocate. All requests are
+ * rounded up to be a multiple CVMX_BOOTMEM_ALIGNMENT_SIZE bytes size
+ *
+ * @param address_min Minimum address that block can occupy.
+ *
+ * @param address_max Specifies the maximum address_min (inclusive)
+ * that the allocation can use.
+ *
+ * @param alignment Requested alignment of the block. If this
+ * alignment cannot be met, the allocation fails.
+ * This must be a power of 2. (Note: Alignment of
+ * CVMX_BOOTMEM_ALIGNMENT_SIZE bytes is required, and
+ * internally enforced. Requested alignments of less
+ * than CVMX_BOOTMEM_ALIGNMENT_SIZE are set to
+ * CVMX_BOOTMEM_ALIGNMENT_SIZE.)
+ * @param flags Flags to control options for the allocation.
+ *
+ * @return physical address of block allocated, or -1 on failure
+ */
+s64 cvmx_bootmem_phy_alloc(u64 req_size, u64 address_min, u64 address_max,
+ u64 alignment, u32 flags);
+
+/**
+ * Allocates a named block of physical memory from the free list, at
+ * (optional) requested address and alignment.
+ *
+ * @param size size of region to allocate. All requests are rounded
+ * up to be a multiple CVMX_BOOTMEM_ALIGNMENT_SIZE bytes size
+ *
+ * @param min_addr Minimum address that block can occupy.
+ *
+ * @param max_addr Specifies the maximum address_min (inclusive) that
+ * the allocation can use.
+ *
+ * @param alignment Requested alignment of the block. If this
+ * alignment cannot be met, the allocation fails.
+ * This must be a power of 2. (Note: Alignment of
+ * CVMX_BOOTMEM_ALIGNMENT_SIZE bytes is required, and
+ * internally enforced. Requested alignments of less
+ * than CVMX_BOOTMEM_ALIGNMENT_SIZE are set to
+ * CVMX_BOOTMEM_ALIGNMENT_SIZE.)
+ *
+ * @param name name to assign to named block
+ *
+ * @param flags Flags to control options for the allocation.
+ *
+ * @return physical address of block allocated, or -1 on failure
+ */
+s64 cvmx_bootmem_phy_named_block_alloc(u64 size, u64 min_addr, u64 max_addr,
+ u64 alignment, const char *name,
+ u32 flags);
+
+/**
+ * Finds a named memory block by name.
+ * Also used for finding an unused entry in the named block table.
+ *
+ * @param name Name of memory block to find. If NULL pointer given,
+ * then finds unused descriptor, if available.
+ *
+ * @param flags Flags to control options for the allocation.
+ *
+ * @return Physical address of the memory block descriptor, zero if not
+ * found. If zero returned when name parameter is NULL, then no
+ * memory block descriptors are available.
+ */
+u64 cvmx_bootmem_phy_named_block_find(const char *name, u32 flags);
+
+/**
+ * Returns the size of available memory in bytes, only
+ * counting blocks that are at least as big as the minimum block
+ * size.
+ *
+ * @param min_block_size
+ * Minimum block size to count in total.
+ *
+ * @return Number of bytes available for allocation that meet the
+ * block size requirement
+ */
+u64 cvmx_bootmem_phy_available_mem(u64 min_block_size);
+
+/**
+ * Frees a named block.
+ *
+ * @param name name of block to free
+ * @param flags flags for passing options
+ *
+ * @return 0 on failure
+ * 1 on success
+ */
+int cvmx_bootmem_phy_named_block_free(const char *name, u32 flags);
+
+/**
+ * Frees a block to the bootmem allocator list. This must
+ * be used with care, as the size provided must match the size
+ * of the block that was allocated, or the list will become
+ * corrupted.
+ *
+ * IMPORTANT: This is only intended to be used as part of named block
+ * frees and initial population of the free memory list.
+ * *
+ *
+ * @param phy_addr physical address of block
+ * @param size size of block in bytes.
+ * @param flags flags for passing options
+ *
+ * @return 1 on success,
+ * 0 on failure
+ */
+int __cvmx_bootmem_phy_free(u64 phy_addr, u64 size, u32 flags);
+
+/**
+ * Prints the list of currently allocated named blocks
+ *
+ */
+void cvmx_bootmem_phy_named_block_print(void);
+
+/**
+ * Prints the list of available memory.
+ *
+ */
+void cvmx_bootmem_phy_list_print(void);
+
+/**
+ * This function initializes the free memory list used by cvmx_bootmem.
+ * This must be called before any allocations can be done.
+ *
+ * @param mem_size Total memory available, in bytes
+ *
+ * @param low_reserved_bytes Number of bytes to reserve (leave out of
+ * free list) at address 0x0.
+ *
+ * @param desc_buffer Buffer for the bootmem descriptor. This must be
+ * a 32 bit addressable address.
+ *
+ * @return 1 on success
+ * 0 on failure
+ */
+s64 cvmx_bootmem_phy_mem_list_init(u64 mem_size, u32 low_reserved_bytes,
+ struct cvmx_bootmem_desc *desc_buffer);
+
+/**
+ * This function initializes the free memory list used by cvmx_bootmem.
+ * This must be called before any allocations can be done.
+ *
+ * @param nodemask Nodemask - one bit per node (bit0->node0, bit1->node1,...)
+ *
+ * @param mem_size[] Array of memory sizes in MBytes per node ([0]->node0,...)
+ *
+ * @param low_reserved_bytes Number of bytes to reserve (leave out of
+ * free list) at address 0x0.
+ *
+ * @param desc_buffer Buffer for the bootmem descriptor. This must be
+ * a 32 bit addressable address.
+ *
+ * @return 1 on success
+ * 0 on failure
+ */
+s64 cvmx_bootmem_phy_mem_list_init_multi(u8 nodemask, u32 mem_size[],
+ u32 low_reserved_bytes,
+ struct cvmx_bootmem_desc *desc_buffer);
+/**
+ * Locks the bootmem allocator. This is useful in certain situations
+ * where multiple allocations must be made without being interrupted.
+ * This should be used with the CVMX_BOOTMEM_FLAG_NO_LOCKING flag.
+ *
+ */
+void cvmx_bootmem_lock(void);
+
+/**
+ * Unlocks the bootmem allocator. This is useful in certain situations
+ * where multiple allocations must be made without being interrupted.
+ * This should be used with the CVMX_BOOTMEM_FLAG_NO_LOCKING flag.
+ *
+ */
+void cvmx_bootmem_unlock(void);
+
+/**
+ * Internal use function to get the current descriptor pointer
+ */
+void *__cvmx_bootmem_internal_get_desc_ptr(void);
+
+/**
+ * Internal use. This is userd to get a pointer to a physical
+ * address. For linux n32 the physical address in mmaped to a virtual
+ * address and the virtual address is returned. For n64 the address
+ * is converted to an xkphys address and the xkhpys address is
+ * returned.
+ */
+void *__cvmx_phys_addr_to_ptr(u64 phys, int size);
+const struct cvmx_bootmem_named_block_desc *
+__cvmx_bootmem_find_named_block_flags(const char *name, u32 flags);
+void *cvmx_bootmem_alloc_named_range_flags(u64 size, u64 min_addr,
+ u64 max_addr, u64 align,
+ const char *name, u32 flags);
+u64 cvmx_bootmem_phy_alloc_range(u64 size, u64 alignment,
+ u64 min_addr, u64 max_addr);
+
+#endif /* __CVMX_BOOTMEM_H__ */