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| author | Joe Hershberger <joe.hershberger@ni.com> | 2012-08-03 10:59:08 +0000 |
|---|---|---|
| committer | Joe Hershberger <joe.hershberger@ni.com> | 2012-09-24 13:55:43 -0500 |
| commit | f8be7d659c45720edb91503d2a480fc198e7ee9d (patch) | |
| tree | c38ce492840a95d7ff7cd8242703096d3c4e488f /common/cmd_bootm.c | |
| parent | 2c8fe5120f8da013cbd789be2f10cce880972836 (diff) | |
| download | talos-obmc-uboot-f8be7d659c45720edb91503d2a480fc198e7ee9d.tar.gz talos-obmc-uboot-f8be7d659c45720edb91503d2a480fc198e7ee9d.zip | |
net: Improve the speed of netconsole
Previously u-boot would initialize the network interface for every
network operation and then shut it down again. This makes sense for
most operations where the network in not known to be needed soon after
the operation is complete. In the case of netconsole, it will use the
network for every interaction with the shell or every printf. This
means that the network is being reinitialized very often. On many
devices, this intialization is very slow.
This patch checks for consecutive netconsole actions and leaves the
ethernet hardware initialized between them. It will still behave the
same old way for all other network operations and any time another
network operation happens between netconsole operations.
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'common/cmd_bootm.c')
| -rw-r--r-- | common/cmd_bootm.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index 45e726af8b..83fa5d7bd8 100644 --- a/common/cmd_bootm.c +++ b/common/cmd_bootm.c @@ -564,6 +564,13 @@ int do_bootm_subcommand(cmd_tbl_t *cmdtp, int flag, int argc, break; case BOOTM_STATE_OS_GO: disable_interrupts(); +#ifdef CONFIG_NETCONSOLE + /* + * Stop the ethernet stack if NetConsole could have + * left it up + */ + eth_halt(); +#endif arch_preboot_os(); boot_fn(BOOTM_STATE_OS_GO, argc, argv, &images); break; @@ -622,6 +629,11 @@ int do_bootm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) */ iflag = disable_interrupts(); +#ifdef CONFIG_NETCONSOLE + /* Stop the ethernet stack if NetConsole could have left it up */ + eth_halt(); +#endif + #if defined(CONFIG_CMD_USB) /* * turn off USB to prevent the host controller from writing to the @@ -1599,6 +1611,11 @@ static int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) */ disable_interrupts(); +#ifdef CONFIG_NETCONSOLE + /* Stop the ethernet stack if NetConsole could have left it up */ + eth_halt(); +#endif + #if defined(CONFIG_CMD_USB) /* * turn off USB to prevent the host controller from writing to the |
