rpi4: update the iobase constant

The PCIe root port is outside of the current RPi
MMIO regions, so we need to adjust the address map.
Given much of the code depends on the legacy IOBASE
lets separate that from the actual MMIO begin/end.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Change-Id: Id65460ae58556bd8826dba08bbad79953e2a7c0b
diff --git a/plat/rpi/rpi4/include/rpi_hw.h b/plat/rpi/rpi4/include/rpi_hw.h
index 7185106..0430d46 100644
--- a/plat/rpi/rpi4/include/rpi_hw.h
+++ b/plat/rpi/rpi4/include/rpi_hw.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -13,14 +13,16 @@
  * Peripherals
  */
 
-#define RPI_IO_BASE			ULL(0xFE000000)
-#define RPI_IO_SIZE			ULL(0x02000000)
+#define RPI_IO_BASE			ULL(0xFC000000)
+#define RPI_IO_SIZE			ULL(0x04000000)
+
+#define RPI_LEGACY_BASE			(ULL(0x02000000) + RPI_IO_BASE)
 
 /*
  * ARM <-> VideoCore mailboxes
  */
 #define RPI3_MBOX_OFFSET		ULL(0x0000B880)
-#define RPI3_MBOX_BASE			(RPI_IO_BASE + RPI3_MBOX_OFFSET)
+#define RPI3_MBOX_BASE			(RPI_LEGACY_BASE + RPI3_MBOX_OFFSET)
 /* VideoCore -> ARM */
 #define RPI3_MBOX0_READ_OFFSET		ULL(0x00000000)
 #define RPI3_MBOX0_PEEK_OFFSET		ULL(0x00000010)
@@ -41,7 +43,7 @@
  * Power management, reset controller, watchdog.
  */
 #define RPI3_IO_PM_OFFSET		ULL(0x00100000)
-#define RPI3_PM_BASE			(RPI_IO_BASE + RPI3_IO_PM_OFFSET)
+#define RPI3_PM_BASE			(RPI_LEGACY_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)
@@ -62,7 +64,7 @@
  * Hardware random number generator.
  */
 #define RPI3_IO_RNG_OFFSET		ULL(0x00104000)
-#define RPI3_RNG_BASE			(RPI_IO_BASE + RPI3_IO_RNG_OFFSET)
+#define RPI3_RNG_BASE			(RPI_LEGACY_BASE + RPI3_IO_RNG_OFFSET)
 #define RPI3_RNG_CTRL_OFFSET		ULL(0x00000000)
 #define RPI3_RNG_STATUS_OFFSET		ULL(0x00000004)
 #define RPI3_RNG_DATA_OFFSET		ULL(0x00000008)
@@ -82,22 +84,22 @@
  * There is also a PL011 UART, multiplexed to the same pins.
  */
 #define RPI4_IO_MINI_UART_OFFSET	ULL(0x00215040)
-#define RPI4_MINI_UART_BASE		(RPI_IO_BASE + RPI4_IO_MINI_UART_OFFSET)
+#define RPI4_MINI_UART_BASE		(RPI_LEGACY_BASE + RPI4_IO_MINI_UART_OFFSET)
 #define RPI4_IO_PL011_UART_OFFSET	ULL(0x00201000)
-#define RPI4_PL011_UART_BASE		(RPI_IO_BASE + RPI4_IO_PL011_UART_OFFSET)
+#define RPI4_PL011_UART_BASE		(RPI_LEGACY_BASE + RPI4_IO_PL011_UART_OFFSET)
 #define RPI4_PL011_UART_CLOCK		ULL(48000000)
 
 /*
  * GPIO controller
  */
 #define RPI3_IO_GPIO_OFFSET		ULL(0x00200000)
-#define RPI3_GPIO_BASE			(RPI_IO_BASE + RPI3_IO_GPIO_OFFSET)
+#define RPI3_GPIO_BASE			(RPI_LEGACY_BASE + RPI3_IO_GPIO_OFFSET)
 
 /*
  * SDHost controller
  */
 #define RPI3_IO_SDHOST_OFFSET           ULL(0x00202000)
-#define RPI3_SDHOST_BASE                (RPI_IO_BASE + RPI3_IO_SDHOST_OFFSET)
+#define RPI3_SDHOST_BASE                (RPI_LEGACY_BASE + RPI3_IO_SDHOST_OFFSET)
 
 /*
  * GIC interrupt controller