plat: imx: Add i.MX8MQ basic support
i.MX8MQ is new SOC of NXP's i.MX8M family based on
A53. It can provide industry-leading audio, voice
and video processing for applications that scale
from consumer home audio to industrial building
automation and mobile computers
this patchset add the basic supoort to boot up
the 4 X A53. more feature will be added later.
Signed-off-by: Bai Ping <ping.bai@nxp.com>
diff --git a/plat/imx/common/imx_uart_console.S b/plat/imx/common/imx_uart_console.S
new file mode 100644
index 0000000..7dbde79
--- /dev/null
+++ b/plat/imx/common/imx_uart_console.S
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#define USE_FINISH_CONSOLE_REG_2
+#include <console_macros.S>
+#include <assert_macros.S>
+#include "imx_uart.h"
+
+#define URXD 0x0 /* Receiver Register */
+#define UTXD 0x40 /* Transmitter Register */
+#define UTS 0xb4 /* UART Test Register (mx31) */
+#define URXD_RX_DATA (0xFF)
+
+ .globl console_uart_register
+ .globl console_uart_init
+ .globl console_uart_putc
+ .globl console_uart_getc
+
+func console_imx_uart_register
+ mov x7, x30
+ mov x6, x3
+ cbz x6, register_fail
+ str x0, [x6, #CONSOLE_T_DRVDATA]
+
+ bl console_imx_uart_init
+ cbz x0, register_fail
+
+ mov x0, x6
+ mov x30, x7
+ finish_console_register imx_uart putc=1, getc=1
+
+register_fail:
+ ret x7
+endfunc console_imx_uart_register
+
+func console_imx_uart_init
+ mov w0, #1
+ ret
+endfunc console_imx_uart_init
+
+func console_imx_uart_putc
+ ldr x1, [x1, #CONSOLE_T_DRVDATA]
+ cbz x1, putc_error
+
+ /* Prepare '\r' to '\n' */
+ cmp w0, #0xA
+ b.ne 2f
+1:
+ /* Check if the transmit FIFO is full */
+ ldr w2, [x1, #UTS]
+ tbz w2, #6, 1b
+ mov w2, #0xD
+ str w2, [x1, #UTXD]
+2:
+ /* Check if the transmit FIFO is full */
+ ldr w2, [x1, #UTS]
+ tbz w2, #6, 2b
+ str w0, [x1, #UTXD]
+ ret
+putc_error:
+ mov w0, #-1
+ ret
+endfunc console_imx_uart_putc
+
+func console_imx_uart_getc
+ ldr x0, [x0, #CONSOLE_T_DRVDATA]
+ cbz x0, getc_error
+1:
+ ldr w1, [x0, #UTS]
+ tbnz w1, #5, 1b
+
+ ldr w1, [x0, #URXD]
+ and w0, w1, #URXD_RX_DATA
+
+ ret
+getc_error:
+ mov w0, #-1
+ ret
+endfunc console_imx_uart_getc
diff --git a/plat/imx/common/include/imx_uart.h b/plat/imx/common/include/imx_uart.h
new file mode 100644
index 0000000..d2c3968
--- /dev/null
+++ b/plat/imx/common/include/imx_uart.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef IMX_UART_H
+#define IMX_UART_H
+
+#include <console.h>
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+ console_t console;
+ uintptr_t base;
+} console_uart_t;
+
+int console_uart_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud,
+ console_uart_t *console);
+#endif /*__ASSEMBLY__*/
+
+#endif /* IMX_UART_H */