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/aarch64/hikey_helpers.S b/plat/hisilicon/hikey/aarch64/hikey_helpers.S
new file mode 100644
index 0000000..680c0a1
--- /dev/null
+++ b/plat/hisilicon/hikey/aarch64/hikey_helpers.S
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include "../hikey_def.h"
+
+ .globl plat_my_core_pos
+ .globl platform_mem_init
+ .globl plat_crash_console_init
+ .globl plat_crash_console_putc
+ .globl plat_report_exception
+ .globl plat_reset_handler
+
+func plat_my_core_pos
+ mrs x0, mpidr_el1
+ and x1, x0, #MPIDR_CPU_MASK
+ and x0, x0, #MPIDR_CLUSTER_MASK
+ add x0, x1, x0, LSR #6
+ ret
+endfunc plat_my_core_pos
+
+ /* -----------------------------------------------------
+ * void platform_mem_init(void);
+ *
+ * We don't need to carry out any memory initialization
+ * on HIKEY. The Secure RAM is accessible straight away.
+ * -----------------------------------------------------
+ */
+func platform_mem_init
+ ret
+endfunc platform_mem_init
+
+ /* ---------------------------------------------
+ * int plat_crash_console_init(void)
+ * Function to initialize the crash console
+ * without a C Runtime to print crash report.
+ * Clobber list : x0, x1, x2
+ * ---------------------------------------------
+ */
+func plat_crash_console_init
+ mov_imm x0, CRASH_CONSOLE_BASE
+ mov_imm x1, PL011_UART_CLK_IN_HZ
+ mov_imm x2, PL011_BAUDRATE
+ b console_core_init
+endfunc plat_crash_console_init
+
+ /* ---------------------------------------------
+ * int plat_crash_console_putc(int c)
+ * Function to print a character on the crash
+ * console without a C Runtime.
+ * Clobber list : x1, x2
+ * ---------------------------------------------
+ */
+func plat_crash_console_putc
+ mov_imm x1, CRASH_CONSOLE_BASE
+ b console_core_putc
+endfunc plat_crash_console_putc
+
+ /* ---------------------------------------------
+ * void plat_report_exception(unsigned int type)
+ * Function to report an unhandled exception
+ * with platform-specific means.
+ * On HIKEY platform, it updates the LEDs
+ * to indicate where we are
+ * ---------------------------------------------
+ */
+func plat_report_exception
+ mov x8, x30
+
+ /* Turn on LED according to x0 (0 -- f) */
+ ldr x2, =0xf7020000
+ and x1, x0, #1
+ str w1, [x2, #4]
+ and x1, x0, #2
+ str w1, [x2, #8]
+ and x1, x0, #4
+ str w1, [x2, #16]
+ and x1, x0, #8
+ str w1, [x2, #32]
+
+ mrs x2, currentel
+ and x2, x2, #0xc0
+ /* Check EL1 */
+ cmp x2, #0x04
+ beq plat_report_el1
+
+ adr x4, plat_err_str
+ bl asm_print_str
+
+ adr x4, esr_el3_str
+ bl asm_print_str
+
+ mrs x4, esr_el3
+ bl asm_print_hex
+
+ adr x4, elr_el3_str
+ bl asm_print_str
+
+ mrs x4, elr_el3
+ bl asm_print_hex
+ b plat_report_end
+
+plat_report_el1:
+ adr x4, plat_err_str
+ bl asm_print_str
+
+ adr x4, esr_el1_str
+ bl asm_print_str
+
+ mrs x4, esr_el1
+ bl asm_print_hex
+
+ adr x4, elr_el1_str
+ bl asm_print_str
+
+ mrs x4, elr_el1
+ bl asm_print_hex
+plat_report_end:
+ mov x30, x8
+ ret
+endfunc plat_report_exception
+
+ /* -----------------------------------------------------
+ * void plat_reset_handler(void);
+ * -----------------------------------------------------
+ */
+func plat_reset_handler
+ ret
+endfunc plat_reset_handler
+
+.section .rodata.rev_err_str, "aS"
+plat_err_str:
+ .asciz "\nPlatform exception reporting:"
+esr_el3_str:
+ .asciz "\nESR_EL3: "
+elr_el3_str:
+ .asciz "\nELR_EL3: "
+esr_el1_str:
+ .asciz "\nESR_EL1: "
+elr_el1_str:
+ .asciz "\nELR_EL1: "