Configure early debug features by SoC type

To build a version with early UART support, set it in config.h

Signed-off-by: Hector Martin <marcan@marcan.st>

config.h

@@ -5,4 +5,7 @@
 
 #define USE_FB
 
+// Target for device-specific debug builds
+//#define TARGET T8103
+
 #endif

src/cpufreq.c

@@ -2,6 +2,7 @@
 
 #include "cpufreq.h"
 #include "adt.h"
+#include "soc.h"
 #include "utils.h"
 
 #define CLUSTER_PSTATE 0x20

src/soc.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: MIT */
+
+#ifndef __SOC_H__
+#define __SOC_H__
+
+#include "../config.h"
+
+#define T8103 0x8103
+#define T6000 0x6000
+#define T6001 0x6001
+
+#ifdef TARGET
+
+#if TARGET == T8103
+#define EARLY_UART_BASE 0x235200000
+#elif TARGET == T6000 || TARGET == T6001
+#define EARLY_UART_BASE 0x39b200000
+#endif
+
+#endif
+#endif

src/start.S

@@ -1,8 +1,6 @@
 /* SPDX-License-Identifier: MIT */
 
-#if defined(EARLY_UART) && !defined(EARLY_UART_BASE)
-#error EARLY_UART_BASE must be defined to the UART base address
-#endif
+#include "soc.h"
 
 #define UTRSTAT 0x010
 #define UTXH 0x020
@@ -153,7 +151,7 @@ cpu_reset:
 .globl debug_putc
 .type debug_putc, @function
 debug_putc:
-#ifdef EARLY_UART
+#ifdef EARLY_UART_BASE
     ldr x1, =EARLY_UART_BASE
 
 1:

src/utils.h

@@ -406,8 +406,6 @@ struct vector_args {
 
 extern u32 board_id, chip_id;
 
-#define T8103 0x8103
-
 extern struct vector_args next_stage;
 
 void deep_wfi(void);