Enable data cache with 1:1 mapping of DDR to enable fast file
transfer over tty which was doing lot of copy.
This feature is enabled only for flashing operation i.e. when
CONFIG_SPEAR_USBTTY is enabled.
This has been tested on SPEAr320, SPEAr600 and SPEAr900 evaluation
boards.
Following figures show an estimate on the performance improvements. The
test setup was a Linux host (not Windows) and involved measurement of
only binary transfer time, through kermit. The flash erase and flash
copy time would be unaffected by these patches.
Another thing is this that the timings remained more or less same across
ARM9 and Cortex based devices, hence reporting only one of the cases.
Before Enhancements
===================
$ time ukermit.small -p /dev/ttyACM0 -f spear320_uImage.img
Downloading file: 100.00% completed(2014080/2014080 bytes)
real 0m41.228s
user 0m0.002s
sys 0m0.064s
After Enhancements
==================
$ time ukermit.large -p /dev/ttyACM0 -f spear320_uImage.img
Downloading file: 100.00% completed(2014080/2014080 bytes)
real 0m5.441s
user 0m0.001s
sys 0m0.001s
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Signed-off-by: Stefan Roese <sr@denx.de>
flash reading is required earlier than flash_init is called since the env_init
is called before flash_init. This makes the smi_init necessary before env_init
being called.
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
ethaddr can be optionally read from i2c memory. So, chip_config command supports
reading/writing hw mac id into i2c memory. Placing this code within
CONFIG_CMD_NET as this would only be needed when network interface is configured
Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Xloader table was used primarily to inform u-boot about the DDR size. However,
now the ddr size is calculated at runtime which eliminates any need for the
Xloader table. So removing this unnecessary code.
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
While the u-boot code is running from the flash, it is essential that no access
is made to the bss segment. This is due to the fact that .rel.dyn and .bss areas
overlap and former contains information used in relocation. In SPEAr, this was
not taken into consideration. As a result, while the relocation wasn't complete,
dram_init populated an uninitialized global variable resulting in corruption of
.rel.dyn area, which resulted in u-boot crash.
This commit fixes this problem by removing code that accesses bss segment
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
Lots of code use this construct:
cmd_usage(cmdtp);
return 1;
Change cmd_usage() let it return 1 - then we can replace all these
ocurrances by
return cmd_usage(cmdtp);
This fixes a few places with incorrect return code handling, too.
Signed-off-by: Wolfgang Denk <wd@denx.de>
The hush shell dynamically allocates (and re-allocates) memory for the
argument strings in the "char *argv[]" argument vector passed to
commands. Any code that modifies these pointers will cause serious
corruption of the malloc data structures and crash U-Boot, so make
sure the compiler can check that no such modifications are being done
by changing the code into "char * const argv[]".
This modification is the result of debugging a strange crash caused
after adding a new command, which used the following argument
processing code which has been working perfectly fine in all Unix
systems since version 6 - but not so in U-Boot:
int main (int argc, char **argv)
{
while (--argc > 0 && **++argv == '-') {
/* ====> */ while (*++*argv) {
switch (**argv) {
case 'd':
debug++;
break;
...
default:
usage ();
}
}
}
...
}
The line marked "====>" will corrupt the malloc data structures and
usually cause U-Boot to crash when the next command gets executed by
the shell. With the modification, the compiler will prevent this with
an
error: increment of read-only location '*argv'
N.B.: The code above can be trivially rewritten like this:
while (--argc > 0 && **++argv == '-') {
char *arg = *argv;
while (*++arg) {
switch (*arg) {
...
Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
I executed 'find . -name "*.[chS]" -perm 755 -exec chmod 644 {} \;'
Signed-off-by: Thomas Weber <swirl@gmx.li>
Add some more: neither Makefile nor config.mk need execute permissions.
Signed-off-by: Wolfgang Denk <wd@denx.de>
SPEAr310 and SPEAr320 SoCs contain an EMI controller to interface
Paraller NOR flashes. This patch adds the support for this IP
The standard CFI driver is used to interface with NOR flashes
Signed-off-by: Vipin <vipin.kumar@st.com>
This patch adds the support to read and write mac id from i2c
memory.
For reading:
if (env contains ethaddr)
pick env ethaddr
else
pick ethaddr from i2c memory
For writing:
chip_config ethaddr XX:XX:XX:XX:XX:XX writes the mac id
in i2c memory
Signed-off-by: Vipin <vipin.kumar@st.com>
SPEAr600 SoC support contains basic spear600 support along with the
usage of following drivers
- serial driver(UART)
- i2c driver
- smi driver
- nand driver(FSMC)
- usbd driver
Signed-off-by: Vipin <vipin.kumar@st.com>
