warp7: Add initial warp7_helpers.S

This commit adds a warp7_helpers.S which contains a implementation of:

- platform_mem_init
- plat_get_my_entrypoint
- plat_crash_console_init
- plat_crash_console_putc

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>

diff --git a/plat/imx/imx7/warp7/aarch32/warp7_helpers.S b/plat/imx/imx7/warp7/aarch32/warp7_helpers.S
new file mode 100644 (file)
index 0000000..b12ff32
--- /dev/null
+++ b/plat/imx/imx7/warp7/aarch32/warp7_helpers.S
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) Linaro 2018 Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <assert_macros.S>
+#include <platform_def.h>
+
+       .globl  platform_mem_init
+       .globl  plat_get_my_entrypoint
+       .globl  plat_crash_console_init
+       .globl  plat_crash_console_putc
+
+       /* ---------------------------------------------
+        * int plat_mem_init(void)
+        * Function to initialize memory.
+        * The HAB hands off the DDR controller already
+        * setup and ready to use.
+        * Implement the mandatory function as a NOP
+        * ---------------------------------------------
+        */
+func platform_mem_init
+       bx      lr
+endfunc platform_mem_init
+
+func plat_get_my_entrypoint
+       mov     r0, #0
+       bx      lr
+endfunc plat_get_my_entrypoint
+
+func plat_crash_console_init
+       mov_imm r0, PLAT_WARP7_BOOT_UART_BASE
+       mov_imm r1, PLAT_WARP7_BOOT_UART_CLK_IN_HZ
+       mov_imm r2, PLAT_WARP7_CONSOLE_BAUDRATE
+       b       imx_crash_uart_init
+endfunc plat_crash_console_init
+
+func plat_crash_console_putc
+       mov_imm r1, PLAT_WARP7_BOOT_UART_BASE
+       b       imx_crash_uart_putc
+endfunc plat_crash_console_putc