From 669b792c77bbc30e9f4d9c95dbc918dc348c49c2 Mon Sep 17 00:00:00 2001 From: Robin Getz Date: Thu, 21 Jun 2007 16:34:08 +0800 Subject: Blackfin arch: Clean up trace buffer handling, No major functional changes. Turns on trace earlier, so crashes at kernel start should print out a trace, making things easier to debug. Signed-off-by: Robin Getz Signed-off-by: Mike Frysinger Signed-off-by: Bryan Wu --- arch/blackfin/kernel/setup.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'arch/blackfin/kernel/setup.c') diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index 07c1cfdc958e..a86bf6545781 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -194,6 +194,17 @@ void __init setup_arch(char **cmdline_p) /* this give a chance to get printk() working before crash. */ #endif + printk(KERN_INFO "Hardware Trace "); + if (bfin_read_TBUFCTL() & 0x1 ) + printk("Active "); + else + printk("Off "); + if (bfin_read_TBUFCTL() & 0x2) + printk("and Enabled\n"); + else + printk("and Disabled\n"); + + #if defined(CONFIG_CHR_DEV_FLASH) || defined(CONFIG_BLK_DEV_FLASH) /* we need to initialize the Flashrom device here since we might * do things with flash early on in the boot @@ -397,9 +408,6 @@ void __init setup_arch(char **cmdline_p) _bfin_swrst = bfin_read_SWRST(); #endif - printk(KERN_INFO "Hardware Trace Enabled\n"); - bfin_write_TBUFCTL(0x03); - /* Copy atomic sequences to their fixed location, and sanity check that these locations are the ones that we advertise to userspace. */ memcpy((void *)FIXED_CODE_START, &fixed_code_start, -- cgit v1.2.3-59-g8ed1b