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lpc7168: make flash available upon reset init 

set user mode to avoid ROM being mapped at address
0 rather than flash.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
This commit is contained in:
Øyvind Harboe 2010-07-30 22:34:43 +02:00
parent a463670c31
commit f4c1f08f16
1 changed files with 19 additions and 0 deletions
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19
tcl/target/lpc1768.cfg
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@ -52,3 +52,22 @@ flash bank $_FLASHNAME lpc2000 0x0 0x80000 0 0 $_TARGETNAME \
# a reset-init handler) speeds it up.
jtag_rclk [ expr 4000 / 6 ]
$_TARGETNAME configure -event reset-start { jtag_rclk [ expr 4000 / 6] }
$_TARGETNAME configure -event reset-init {
# Do not remap 0x0000-0x0020 to anything but the flash (i.e. select
# "User Flash Mode" where interrupt vectors are _not_ remapped,
# and reside in flash instead).
#
# See Table 612. Memory Mapping Control register (MEMMAP - 0x400F C040) bit description
# Bit Symbol Value Description Reset
# value
# 0 MAP Memory map control. 0
# 0 Boot mode. A portion of the Boot ROM is mapped to address 0.
# 1 User mode. The on-chip Flash memory is mapped to address 0.
# 31:1 - Reserved. The value read from a reserved bit is not defined. NA
#
# http://ics.nxp.com/support/documents/microcontrollers/?scope=LPC1768&type=user
mww 0x400FC040 0x01
}