rpi3: Rename RPI3_IO_BASE to RPI_IO_BASE

The location of the MMIO window is different between a Raspberry Pi 3
and 4: the former has it just below 1GB, the latter below 4GB.
The relative location of the peripherals is mostly compatible though.

To allow sharing code between the two models, let's rename the symbol
used for the MMIO base to the more generic RPI_IO_BASE name.

Change-Id: I3c2762fb30fd56cca743348e79d72ef8c60ddb03
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

plat/rpi/rpi3/include/platform_def.h

@@ -110,8 +110,8 @@
 /*
  * I/O registers.
  */
-#define DEVICE0_BASE			RPI3_IO_BASE
-#define DEVICE0_SIZE			RPI3_IO_SIZE
+#define DEVICE0_BASE			RPI_IO_BASE
+#define DEVICE0_SIZE			RPI_IO_SIZE
 
 /*
  * Arm TF lives in SRAM, partition it here

plat/rpi/rpi3/include/rpi_hw.h

@@ -13,14 +13,14 @@
  * Peripherals
  */
 
-#define RPI3_IO_BASE			ULL(0x3F000000)
-#define RPI3_IO_SIZE			ULL(0x01000000)
+#define RPI_IO_BASE			ULL(0x3F000000)
+#define RPI_IO_SIZE			ULL(0x01000000)
 
 /*
  * ARM <-> VideoCore mailboxes
  */
 #define RPI3_MBOX_OFFSET		ULL(0x0000B880)
-#define RPI3_MBOX_BASE			(RPI3_IO_BASE + RPI3_MBOX_OFFSET)
+#define RPI3_MBOX_BASE			(RPI_IO_BASE + RPI3_MBOX_OFFSET)
 /* VideoCore -> ARM */
 #define RPI3_MBOX0_READ_OFFSET		ULL(0x00000000)
 #define RPI3_MBOX0_PEEK_OFFSET		ULL(0x00000010)
@@ -41,7 +41,7 @@
  * Power management, reset controller, watchdog.
  */
 #define RPI3_IO_PM_OFFSET		ULL(0x00100000)
-#define RPI3_PM_BASE			(RPI3_IO_BASE + RPI3_IO_PM_OFFSET)
+#define RPI3_PM_BASE			(RPI_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)
@@ -62,7 +62,7 @@
  * Hardware random number generator.
  */
 #define RPI3_IO_RNG_OFFSET		ULL(0x00104000)
-#define RPI3_RNG_BASE			(RPI3_IO_BASE + RPI3_IO_RNG_OFFSET)
+#define RPI3_RNG_BASE			(RPI_IO_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)
@@ -80,20 +80,20 @@
  * 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_BASE		(RPI_IO_BASE + RPI3_IO_MINI_UART_OFFSET)
 #define RPI3_MINI_UART_CLK_IN_HZ	ULL(500000000)
 
 /*
  * GPIO controller
  */
 #define RPI3_IO_GPIO_OFFSET		ULL(0x00200000)
-#define RPI3_GPIO_BASE			(RPI3_IO_BASE + RPI3_IO_GPIO_OFFSET)
+#define RPI3_GPIO_BASE			(RPI_IO_BASE + RPI3_IO_GPIO_OFFSET)
 
 /*
  * SDHost controller
  */
 #define RPI3_IO_SDHOST_OFFSET           ULL(0x00202000)
-#define RPI3_SDHOST_BASE                (RPI3_IO_BASE + RPI3_IO_SDHOST_OFFSET)
+#define RPI3_SDHOST_BASE                (RPI_IO_BASE + RPI3_IO_SDHOST_OFFSET)
 
 /*
  * Local interrupt controller