rpi3: Implement PSCI_SYSTEM_OFF
This implementation doesn't actually turn the system off, it simply
reboots it and prevents it from booting while keeping it in a low power
mode.
Change-Id: I7f72c9f43f25ba0341db052bc2be4774c88a7ea3
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/plat/rpi3/rpi3_hw.h b/plat/rpi3/rpi3_hw.h
index 70272e0..f411acb 100644
--- a/plat/rpi3/rpi3_hw.h
+++ b/plat/rpi3/rpi3_hw.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -17,24 +17,32 @@
#define RPI3_IO_SIZE ULL(0x01000000)
/*
- * Serial port (called 'Mini UART' in the BCM docucmentation).
- */
-#define RPI3_IO_MINI_UART_OFFSET ULL(0x00215040)
-#define RPI3_MINI_UART_BASE (RPI3_IO_BASE + RPI3_IO_MINI_UART_OFFSET)
-#define RPI3_MINI_UART_CLK_IN_HZ ULL(500000000)
-
-/*
* Power management, reset controller, watchdog.
*/
#define RPI3_IO_PM_OFFSET ULL(0x00100000)
#define RPI3_PM_BASE (RPI3_IO_BASE + RPI3_IO_PM_OFFSET)
/* Registers on top of RPI3_PM_BASE. */
#define RPI3_PM_RSTC_OFFSET ULL(0x0000001C)
+#define RPI3_PM_RSTS_OFFSET ULL(0x00000020)
#define RPI3_PM_WDOG_OFFSET ULL(0x00000024)
/* Watchdog constants */
-#define RPI3_PM_PASSWORD ULL(0x5A000000)
-#define RPI3_PM_RSTC_WRCFG_MASK ULL(0x00000030)
-#define RPI3_PM_RSTC_WRCFG_FULL_RESET ULL(0x00000020)
+#define RPI3_PM_PASSWORD U(0x5A000000)
+#define RPI3_PM_RSTC_WRCFG_MASK U(0x00000030)
+#define RPI3_PM_RSTC_WRCFG_FULL_RESET U(0x00000020)
+/*
+ * The RSTS register is used by the VideoCore firmware when booting the
+ * Raspberry Pi to know which partition to boot from. The partition value is
+ * formed by bits 0, 2, 4, 6, 8 and 10. Partition 63 is used by said firmware
+ * to indicate halt.
+ */
+#define RPI3_PM_RSTS_WRCFG_HALT U(0x00000555)
+
+/*
+ * Serial port (called 'Mini UART' in the BCM docucmentation).
+ */
+#define RPI3_IO_MINI_UART_OFFSET ULL(0x00215040)
+#define RPI3_MINI_UART_BASE (RPI3_IO_BASE + RPI3_IO_MINI_UART_OFFSET)
+#define RPI3_MINI_UART_CLK_IN_HZ ULL(500000000)
/*
* Local interrupt controller