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
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