arm_fpga: Read UART address from DT
The arm_fpga port requires a DTB, to launch a BL33 payload.
To make this port more flexible, we can also use the information in the
DT to configure the console driver.
For a start, find the DT node pointed to by the stdout-path property, and
read the base address from there.
This assumes for now that the stdout-path points to a PL011 UART.
This allows to remove platform specific addresses from the image. We
keep the original base address for the crash console.
Change-Id: I46a990de2315f81cae4d7913ae99a07b0bec5cb1
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/arm/board/arm_fpga/fpga_def.h b/plat/arm/board/arm_fpga/fpga_def.h
index 0bb2b22..0378729 100644
--- a/plat/arm/board/arm_fpga/fpga_def.h
+++ b/plat/arm/board/arm_fpga/fpga_def.h
@@ -27,9 +27,11 @@
* FPGA image memory map related constants
******************************************************************************/
-/* UART base address, as configured by the image */
-#define PLAT_FPGA_BOOT_UART_BASE 0x7ff80000
-#define PLAT_FPGA_CRASH_UART_BASE PLAT_FPGA_BOOT_UART_BASE
+/*
+ * UART base address, just for the crash console, as a fallback.
+ * The actual console UART address is taken from the DT.
+ */
+#define PLAT_FPGA_CRASH_UART_BASE 0x7ff80000
#define FPGA_DEFAULT_TIMER_FREQUENCY 10000000