hikey: support BL1
Initialize regulators, pins and eMMC in BL1. Only SRAM could be used in BL1.
So BL2 will be loaded from eMMC into SRAM later.
Change-Id: I8e7ef82ffa29a3c647c9d2d2981e8759ee85d833
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Dan Handley <dan.handley@arm.com>
diff --git a/plat/hisilicon/hikey/hikey_io_storage.c b/plat/hisilicon/hikey/hikey_io_storage.c
new file mode 100644
index 0000000..4ca1846
--- /dev/null
+++ b/plat/hisilicon/hikey/hikey_io_storage.c
@@ -0,0 +1,183 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <assert.h>
+#include <debug.h>
+#include <emmc.h>
+#include <errno.h>
+#include <firmware_image_package.h>
+#include <io_block.h>
+#include <io_driver.h>
+#include <io_fip.h>
+#include <io_memmap.h>
+#include <io_storage.h>
+#include <mmio.h>
+#include <platform_def.h>
+#include <semihosting.h> /* For FOPEN_MODE_... */
+#include <string.h>
+#include "hikey_private.h"
+
+#define EMMC_BLOCK_SHIFT 9
+
+/* Page 1024, since only a few pages before 2048 are used as partition table */
+#define SERIALNO_EMMC_OFFSET (1024 * 512)
+
+struct plat_io_policy {
+ uintptr_t *dev_handle;
+ uintptr_t image_spec;
+ int (*check)(const uintptr_t spec);
+};
+
+static const io_dev_connector_t *emmc_dev_con;
+static uintptr_t emmc_dev_handle;
+static const io_dev_connector_t *fip_dev_con;
+static uintptr_t fip_dev_handle;
+
+static int check_emmc(const uintptr_t spec);
+static int check_fip(const uintptr_t spec);
+
+static const io_block_spec_t emmc_fip_spec = {
+ .offset = HIKEY_FIP_BASE,
+ .length = HIKEY_FIP_MAX_SIZE,
+};
+
+static const io_block_dev_spec_t emmc_dev_spec = {
+ /* It's used as temp buffer in block driver. */
+#if IMAGE_BL1
+ .buffer = {
+ .offset = HIKEY_BL1_MMC_DATA_BASE,
+ .length = HIKEY_BL1_MMC_DATA_SIZE,
+ },
+#else
+ .buffer = {
+ .offset = HIKEY_MMC_DATA_BASE,
+ .length = HIKEY_MMC_DATA_SIZE,
+ },
+#endif
+ .ops = {
+ .read = emmc_read_blocks,
+ .write = emmc_write_blocks,
+ },
+ .block_size = EMMC_BLOCK_SIZE,
+};
+
+static const io_uuid_spec_t bl2_uuid_spec = {
+ .uuid = UUID_TRUSTED_BOOT_FIRMWARE_BL2,
+};
+
+static const io_uuid_spec_t bl31_uuid_spec = {
+ .uuid = UUID_EL3_RUNTIME_FIRMWARE_BL31,
+};
+
+static const io_uuid_spec_t bl33_uuid_spec = {
+ .uuid = UUID_NON_TRUSTED_FIRMWARE_BL33,
+};
+
+static const io_uuid_spec_t scp_bl2_uuid_spec = {
+ .uuid = UUID_SCP_FIRMWARE_SCP_BL2,
+};
+
+static const struct plat_io_policy policies[] = {
+ [FIP_IMAGE_ID] = {
+ &emmc_dev_handle,
+ (uintptr_t)&emmc_fip_spec,
+ check_emmc
+ },
+ [BL2_IMAGE_ID] = {
+ &fip_dev_handle,
+ (uintptr_t)&bl2_uuid_spec,
+ check_fip
+ },
+ [SCP_BL2_IMAGE_ID] = {
+ &fip_dev_handle,
+ (uintptr_t)&scp_bl2_uuid_spec,
+ check_fip
+ },
+ [BL31_IMAGE_ID] = {
+ &fip_dev_handle,
+ (uintptr_t)&bl31_uuid_spec,
+ check_fip
+ },
+ [BL33_IMAGE_ID] = {
+ &fip_dev_handle,
+ (uintptr_t)&bl33_uuid_spec,
+ check_fip
+ }
+};
+
+static int check_emmc(const uintptr_t spec)
+{
+ int result;
+ uintptr_t local_handle;
+
+ result = io_dev_init(emmc_dev_handle, (uintptr_t)NULL);
+ if (result == 0) {
+ result = io_open(emmc_dev_handle, spec, &local_handle);
+ if (result == 0)
+ io_close(local_handle);
+ }
+ return result;
+}
+
+static int check_fip(const uintptr_t spec)
+{
+ int result;
+ uintptr_t local_image_handle;
+
+ /* See if a Firmware Image Package is available */
+ result = io_dev_init(fip_dev_handle, (uintptr_t)FIP_IMAGE_ID);
+ if (result == 0) {
+ result = io_open(fip_dev_handle, spec, &local_image_handle);
+ if (result == 0) {
+ VERBOSE("Using FIP\n");
+ io_close(local_image_handle);
+ }
+ }
+ return result;
+}
+
+void hikey_io_setup(void)
+{
+ int result;
+
+ result = register_io_dev_block(&emmc_dev_con);
+ assert(result == 0);
+
+ result = register_io_dev_fip(&fip_dev_con);
+ assert(result == 0);
+
+ result = io_dev_open(emmc_dev_con, (uintptr_t)&emmc_dev_spec,
+ &emmc_dev_handle);
+ assert(result == 0);
+
+ result = io_dev_open(fip_dev_con, (uintptr_t)NULL, &fip_dev_handle);
+ assert(result == 0);
+
+ /* Ignore improbable errors in release builds */
+ (void)result;
+}
+
+/* Return an IO device handle and specification which can be used to access
+ * an image. Use this to enforce platform load policy
+ */
+int plat_get_image_source(unsigned int image_id, uintptr_t *dev_handle,
+ uintptr_t *image_spec)
+{
+ int result;
+ const struct plat_io_policy *policy;
+
+ assert(image_id < ARRAY_SIZE(policies));
+
+ policy = &policies[image_id];
+ result = policy->check(policy->image_spec);
+ assert(result == 0);
+
+ *image_spec = policy->image_spec;
+ *dev_handle = *(policy->dev_handle);
+
+ return result;
+}