diff options
| author | Kim Phillips <kim.phillips@freescale.com> | 2010-04-20 19:37:54 -0500 |
|---|---|---|
| committer | Kim Phillips <kim.phillips@freescale.com> | 2010-04-22 18:44:56 -0500 |
| commit | 1a2e203b31d33fb720f2cf1033b241ad36ab405a (patch) | |
| tree | 9185cdf770c05455c6f5e6a0e16acff203efe8d1 /arch/powerpc/lib | |
| parent | a059e90e16e126e25da33ce23a37e2acce84284c (diff) | |
| download | u-boot-imx-1a2e203b31d33fb720f2cf1033b241ad36ab405a.zip u-boot-imx-1a2e203b31d33fb720f2cf1033b241ad36ab405a.tar.gz u-boot-imx-1a2e203b31d33fb720f2cf1033b241ad36ab405a.tar.bz2 | |
mpc83xx: turn on icache in core initialization to improve u-boot boot time
before, MPC8349ITX boots u-boot in 4.3sec:
column1 is elapsed time since first message
column2 is elapsed time since previous message
column3 is the message
0.000 0.000: U-Boot 2010.03-00126-gfd4e49c (Apr 11 2010 - 17:25:29) MPC83XX
0.000 0.000:
0.000 0.000: Reset Status:
0.000 0.000:
0.032 0.032: CPU: e300c1, MPC8349E, Rev: 1.1 at 533.333 MHz, CSB: 266.667 MHz
0.032 0.000: Board: Freescale MPC8349E-mITX
0.032 0.000: UPMA: Configured for compact flash
0.032 0.000: I2C: ready
0.061 0.028: DRAM: 256 MB (DDR1, 64-bit, ECC off, 266.667 MHz)
1.516 1.456: FLASH: 16 MB
2.641 1.125: PCI: Bus Dev VenId DevId Class Int
2.652 0.011: 00 10 1095 3114 0180 00
2.652 0.000: PCI: Bus Dev VenId DevId Class Int
2.652 0.000: In: serial
2.652 0.000: Out: serial
2.652 0.000: Err: serial
2.682 0.030: Board revision: 1.0 (PCF8475A)
3.080 0.398: Net: TSEC1: No support for PHY id ffffffff; assuming generic
3.080 0.000: TSEC0, TSEC1
4.300 1.219: IDE: Bus 0: .** Timeout **
after, MPC8349ITX boots u-boot in 3.0sec:
0.010 0.010: U-Boot 2010.03-00127-g4b468cc-dirty (Apr 11 2010 - 17:47:29) MPC83XX
0.010 0.000:
0.010 0.000: Reset Status:
0.010 0.000:
0.017 0.007: CPU: e300c1, MPC8349E, Rev: 1.1 at 533.333 MHz, CSB: 266.667 MHz
0.017 0.000: Board: Freescale MPC8349E-mITX
0.038 0.020: UPMA: Configured for compact flash
0.038 0.000: I2C: ready
0.038 0.000: DRAM: 256 MB (DDR1, 64-bit, ECC off, 266.667 MHz)
0.260 0.222: FLASH: 16 MB
1.390 1.130: PCI: Bus Dev VenId DevId Class Int
1.390 0.000: 00 10 1095 3114 0180 00
1.390 0.000: PCI: Bus Dev VenId DevId Class Int
1.400 0.010: In: serial
1.400 0.000: Out: serial
1.400 0.000: Err: serial
1.400 0.000: Board revision: 1.0 (PCF8475A)
1.832 0.432: Net: TSEC1: No support for PHY id ffffffff; assuming generic
1.832 0.000: TSEC0, TSEC1
3.038 1.205: IDE: Bus 0: .** Timeout **
also tested on these boards (albeit with a less accurate
boottime measurement method):
seconds: before after
8349MDS ~2.6 ~2.2
8360MDS ~2.8 ~2.6
8313RDB ~2.5 ~2.3 #nand boot
837xRDB ~3.1 ~2.3
also tested on an 8323ERDB.
v2: also remove the delayed icache enablement assumption in arch ppc's
board.c, and add a CONFIG_MPC83xx define in the ITX config file for
consistency (even though it was already being defined in 83xx'
config.mk).
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Diffstat (limited to 'arch/powerpc/lib')
| -rw-r--r-- | arch/powerpc/lib/board.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/lib/board.c b/arch/powerpc/lib/board.c index a30acee..7b09fb5 100644 --- a/arch/powerpc/lib/board.c +++ b/arch/powerpc/lib/board.c @@ -686,7 +686,7 @@ void board_init_r (gd_t *id, ulong dest_addr) WATCHDOG_RESET(); -#if defined(CONFIG_SYS_DELAYED_ICACHE) || defined(CONFIG_MPC83xx) +#if defined(CONFIG_SYS_DELAYED_ICACHE) icache_enable (); /* it's time to enable the instruction cache */ #endif |