warp7: io_storage: Add initial stub warp7_io_storage.c
This commit adds support for parsing a FIP pre-loaded by a previous boot-phase such as u-boot or via ATF reading directly from eMMC. [bod: squashing several patches from Rui, Jun and bod] Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by: Jun Nie <jun.nie@linaro.org> Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
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/*
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* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <debug.h>
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#include <mmc.h>
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#include <firmware_image_package.h>
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#include <io_block.h>
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#include <io_driver.h>
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#include <io_fip.h>
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#include <io_memmap.h>
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#include <platform_def.h>
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static const io_dev_connector_t *fip_dev_con;
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static uintptr_t fip_dev_handle;
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#ifndef WARP7_FIP_MMAP
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static const io_dev_connector_t *mmc_dev_con;
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static uintptr_t mmc_dev_handle;
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static const io_block_spec_t mmc_fip_spec = {
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.offset = WARP7_FIP_MMC_BASE,
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.length = WARP7_FIP_SIZE
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};
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static const io_block_dev_spec_t mmc_dev_spec = {
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/* It's used as temp buffer in block driver. */
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.buffer = {
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.offset = WARP7_FIP_BASE,
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/* do we need a new value? */
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.length = WARP7_FIP_SIZE
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},
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.ops = {
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.read = mmc_read_blocks,
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.write = mmc_write_blocks,
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},
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.block_size = MMC_BLOCK_SIZE,
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};
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static int open_mmc(const uintptr_t spec);
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#else
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static const io_dev_connector_t *memmap_dev_con;
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static uintptr_t memmap_dev_handle;
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static const io_block_spec_t fip_block_spec = {
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.offset = WARP7_FIP_BASE,
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.length = WARP7_FIP_SIZE
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};
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static int open_memmap(const uintptr_t spec);
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#endif
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static int open_fip(const uintptr_t spec);
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static const io_uuid_spec_t bl32_uuid_spec = {
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.uuid = UUID_SECURE_PAYLOAD_BL32,
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};
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static const io_uuid_spec_t hw_config_uuid_spec = {
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.uuid = UUID_HW_CONFIG,
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};
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static const io_uuid_spec_t bl32_extra1_uuid_spec = {
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.uuid = UUID_SECURE_PAYLOAD_BL32_EXTRA1,
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};
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static const io_uuid_spec_t bl32_extra2_uuid_spec = {
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.uuid = UUID_SECURE_PAYLOAD_BL32_EXTRA2,
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};
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static const io_uuid_spec_t bl33_uuid_spec = {
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.uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
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};
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/* TODO: this structure is replicated multiple times. rationalize it ! */
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struct plat_io_policy {
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uintptr_t *dev_handle;
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uintptr_t image_spec;
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int (*check)(const uintptr_t spec);
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};
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static const struct plat_io_policy policies[] = {
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#ifndef WARP7_FIP_MMAP
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[FIP_IMAGE_ID] = {
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&mmc_dev_handle,
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(uintptr_t)&mmc_fip_spec,
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open_mmc
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},
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#else
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[FIP_IMAGE_ID] = {
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&memmap_dev_handle,
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(uintptr_t)&fip_block_spec,
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open_memmap
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},
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#endif
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[BL32_IMAGE_ID] = {
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&fip_dev_handle,
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(uintptr_t)&bl32_uuid_spec,
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open_fip
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},
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[BL32_EXTRA1_IMAGE_ID] = {
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&fip_dev_handle,
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(uintptr_t)&bl32_extra1_uuid_spec,
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open_fip
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},
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[BL32_EXTRA2_IMAGE_ID] = {
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&fip_dev_handle,
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(uintptr_t)&bl32_extra2_uuid_spec,
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open_fip
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},
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[HW_CONFIG_ID] = {
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&fip_dev_handle,
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(uintptr_t)&hw_config_uuid_spec,
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open_fip
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},
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[BL33_IMAGE_ID] = {
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&fip_dev_handle,
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(uintptr_t)&bl33_uuid_spec,
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open_fip
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}
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};
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static int open_fip(const uintptr_t spec)
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{
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int result;
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uintptr_t local_image_handle;
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/* See if a Firmware Image Package is available */
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result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID);
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if (result == 0) {
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result = io_open(fip_dev_handle, spec, &local_image_handle);
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if (result == 0) {
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VERBOSE("Using FIP\n");
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io_close(local_image_handle);
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}
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}
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return result;
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}
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#ifndef WARP7_FIP_MMAP
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static int open_mmc(const uintptr_t spec)
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{
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int result;
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uintptr_t local_handle;
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result = io_dev_init(mmc_dev_handle, (uintptr_t)NULL);
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if (result == 0) {
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result = io_open(mmc_dev_handle, spec, &local_handle);
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if (result == 0)
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io_close(local_handle);
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}
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return result;
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}
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#else
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static int open_memmap(const uintptr_t spec)
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{
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int result;
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uintptr_t local_image_handle;
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result = io_dev_init(memmap_dev_handle, (uintptr_t)NULL);
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if (result == 0) {
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result = io_open(memmap_dev_handle, spec, &local_image_handle);
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if (result == 0) {
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VERBOSE("Using Memmap\n");
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io_close(local_image_handle);
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}
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}
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return result;
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}
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#endif
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int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle,
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uintptr_t *image_spec)
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{
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int result;
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const struct plat_io_policy *policy;
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assert(image_id < ARRAY_SIZE(policies));
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policy = &policies[image_id];
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result = policy->check(policy->image_spec);
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assert(result == 0);
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*image_spec = policy->image_spec;
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*dev_handle = *policy->dev_handle;
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return result;
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}
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void plat_warp7_io_setup(void)
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{
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int result __unused;
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#ifndef WARP7_FIP_MMAP
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result = register_io_dev_block(&mmc_dev_con);
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assert(result == 0);
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result = io_dev_open(mmc_dev_con, (uintptr_t)&mmc_dev_spec,
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&mmc_dev_handle);
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assert(result == 0);
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#else
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result = register_io_dev_memmap(&memmap_dev_con);
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assert(result == 0);
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result = io_dev_open(memmap_dev_con, (uintptr_t)NULL,
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&memmap_dev_handle);
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assert(result == 0);
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#endif
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result = register_io_dev_fip(&fip_dev_con);
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assert(result == 0);
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result = io_dev_open(fip_dev_con, (uintptr_t)NULL,
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&fip_dev_handle);
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assert(result == 0);
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}
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@ -10,5 +10,6 @@
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/*******************************************************************************
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* Function and variable prototypes
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******************************************************************************/
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void plat_warp7_io_setup(void);
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#endif /*__WARP7_PRIVATE_H__ */
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