ARM: imx: imx8m: Introduce and use UART_BASE_ADDR(n)
Introduce helper macro UART_BASE_ADDR(n), which returns Nth UART base
address. Convert all board configurations to this new macro. This is the
first step toward switching CONFIG_MXC_UART_BASE to Kconfig. This is a
clean up, no functional change.
The new macro contains compile-time test to verify N is in suitable
range. The test works such that it multiplies constant N by constant
double-negation of size of a non-empty structure, i.e. it multiplies
constant N by constant 1 in each successful compilation case.
The non-empty structure may contain C11 _Static_assert(), make use of
this and place the kernel variant of static assert in there, so that
it performs the compile-time check for N in the correct range. Note
that it is not possible to directly use static_assert in compound
statements, hence this convoluted construct.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/include/configs/phycore_imx8mp.h b/include/configs/phycore_imx8mp.h
index 0c963b6..eb92c42 100644
--- a/include/configs/phycore_imx8mp.h
+++ b/include/configs/phycore_imx8mp.h
@@ -84,7 +84,7 @@
#define PHYS_SDRAM_SIZE 0x80000000
/* UART */
-#define CONFIG_MXC_UART_BASE UART1_BASE_ADDR
+#define CONFIG_MXC_UART_BASE UART_BASE_ADDR(1)
/* Monitor Command Prompt */
#define CONFIG_SYS_CBSIZE SZ_2K