Add hooks for tracing to generic board, including:
- allow early tracing to start early as possible in U-Boot
- reserve memory for trace buffer
- copy early trace buffer to main trace buffer after relocation
- setup full tracing support after relocation
Signed-off-by: Simon Glass <s...@chromium.org>
---
common/board_f.c | 15 +++++++++++++++
common/board_r.c | 11 +++++++++++
include/asm-generic/global_data.h | 3 +++
3 files changed, 29 insertions(+)
diff --git a/common/board_f.c b/common/board_f.c
index 3a6638f..7c7b5fb 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -53,6 +53,7 @@
#include <os.h>
#include <post.h>
#include <spi.h>
+#include <trace.h>
#include <watchdog.h>
#include <asm/errno.h>
#include <asm/io.h>
@@ -501,6 +502,18 @@ static int reserve_lcd(void)
}
#endif /* CONFIG_LCD */
+static int reserve_trace(void)
+{
+#ifdef CONFIG_TRACE
+ gd->dest_addr -= CONFIG_TRACE_BUFFER_SIZE;
+ gd->trace_buff = map_sysmem(gd->dest_addr, CONFIG_TRACE_BUFFER_SIZE);
+ debug("Reserving %dk for trace data at: %08lx\n",
+ CONFIG_TRACE_BUFFER_SIZE >> 10, gd->dest_addr);
+#endif
+
+ return 0;
+}
+
#if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
&& !defined(CONFIG_ARM) && !defined(CONFIG_X86)
static int reserve_video(void)
@@ -839,6 +852,7 @@ static init_fnc_t init_sequence_f[] = {
#ifdef CONFIG_SANDBOX
setup_ram_buf,
#endif
+ trace_early_init,
setup_fdt,
setup_mon_len,
#if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
@@ -990,6 +1004,7 @@ static init_fnc_t init_sequence_f[] = {
#ifdef CONFIG_LCD
reserve_lcd,
#endif
+ reserve_trace,
/* TODO: Why the dependency on CONFIG_8xx? */
#if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
&& !defined(CONFIG_ARM) && !defined(CONFIG_X86)
diff --git a/common/board_r.c b/common/board_r.c
index f801e41..b745749 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -58,6 +58,7 @@
#include <serial.h>
#include <spi.h>
#include <stdio_dev.h>
+#include <trace.h>
#include <watchdog.h>
#ifdef CONFIG_ADDR_MAP
#include <asm/mmu.h>
@@ -106,6 +107,15 @@ static int initr_secondary_cpu(void)
return 0;
}
+static int initr_trace(void)
+{
+#ifdef CONFIG_TRACE
+ trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
+#endif
+
+ return 0;
+}
+
static int initr_reloc(void)
{
gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
@@ -711,6 +721,7 @@ static int run_main_loop(void)
* TODO: perhaps reset the watchdog in the initcall function after each call?
*/
init_fnc_t init_sequence_r[] = {
+ initr_trace,
initr_reloc,
/* TODO: could x86/PPC have this also perhaps? */
#ifdef CONFIG_ARM
diff --git a/include/asm-generic/global_data.h
b/include/asm-generic/global_data.h
index 5416f46..bd29ab6 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -85,6 +85,9 @@ typedef struct global_data {
unsigned long fdt_size; /* Space reserved for relocated FDT */
void **jt; /* jump table */
char env_buf[32]; /* buffer for getenv() before reloc. */
+#ifdef CONFIG_TRACE
+ void *trace_buff; /* The trace buffer */
+#endif
struct arch_global_data arch; /* architecture-specific data */
} gd_t;
#endif
--
1.8.2.1
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