Introduce STMicroelectronics STM32MP1 platform
STM32MP1 is a microprocessor designed by STMicroelectronics,
based on a dual Arm Cortex-A7.
It is an Armv7-A platform, using dedicated code from TF-A.
STM32MP1 uses BL2 compiled with BL2_AT_EL3.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Signed-off-by: Mathieu Belou <mathieu.belou@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Pascal Paillet <p.paillet@st.com>
diff --git a/drivers/st/uart/aarch32/stm32_console.S b/drivers/st/uart/aarch32/stm32_console.S
new file mode 100644
index 0000000..2b7c83d
--- /dev/null
+++ b/drivers/st/uart/aarch32/stm32_console.S
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+#include <asm_macros.S>
+
+ .globl console_core_init
+ .globl console_core_putc
+ .globl console_core_getc
+ .globl console_core_flush
+
+ /* -----------------------------------------------------------------
+ * int console_core_init(uintptr_t base_addr,
+ * unsigned int uart_clk,
+ * unsigned int baud_rate)
+ *
+ * Function to initialize the console without a C Runtime to print
+ * debug information. This function will be accessed by console_init
+ * and crash reporting.
+ *
+ * In: r0 - console base address
+ * r1 - Uart clock in Hz
+ * r2 - Baud rate
+ * Out: return 1 on success else 0 on error
+ * Clobber list : r1, r2, r3
+ * -----------------------------------------------------------------
+ */
+func console_core_init
+ bx lr
+endfunc console_core_init
+
+ /* ---------------------------------------------------------------
+ * int console_core_putc(int c, uintptr_t base_addr)
+ *
+ * Function to output a character over the console. It returns the
+ * character printed on success or -1 on error.
+ *
+ * In : r0 - character to be printed
+ * r1 - console base address
+ * Out : return -1 on error else return character.
+ * Clobber list : r2
+ * ---------------------------------------------------------------
+ */
+func console_core_putc
+ bx lr
+endfunc console_core_putc
+
+ /* -----------------------------------------------------------
+ * int console_core_getc(uintptr_t base_addr)
+ *
+ * Function to get a character from the console.
+ * It returns the character grabbed on success or -1 on error.
+ *
+ * In : r0 - console base address
+ * Out : return -1.
+ * Clobber list : r0, r1
+ * -----------------------------------------------------------
+ */
+func console_core_getc
+ /* Not supported */
+ mov r0, #-1
+ bx lr
+endfunc console_core_getc
+
+ /* ---------------------------------------------------------------
+ * int console_core_flush(uintptr_t base_addr)
+ *
+ * Function to force a write of all buffered data that hasn't been
+ * output.
+ *
+ * In : r0 - console base address
+ * Out : return -1 on error else return 0.
+ * Clobber list : r0, r1
+ * ---------------------------------------------------------------
+ */
+func console_core_flush
+ bx lr
+endfunc console_core_flush