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 sjg@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