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u-boot/include/env_callback.h

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
/* SPDX-License-Identifier: GPL-2.0+ */
env: Add support for callbacks to environment vars Add support for per-variable callbacks to the "hashtable" functions. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> !!!fix comment in callback
2012-12-12 04:16:24 +00:00
/*
* (C) Copyright 2012
* Joe Hershberger, National Instruments, joe.hershberger@ni.com
*/
#ifndef __ENV_CALLBACK_H__
#define __ENV_CALLBACK_H__
env: Add environment variable flags Currently just validates variable types as decimal, hexidecimal, boolean, ip address, and mac address. If the entry is not found in the env ".flags", then look in the static one. This allows the env to override the static definitions, but prevents the need to have every definition in the environment distracting you. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-12 04:16:31 +00:00
#include <env_flags.h>
env: Add support for callbacks to environment vars Add support for per-variable callbacks to the "hashtable" functions. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> !!!fix comment in callback
2012-12-12 04:16:24 +00:00
#include <linker_lists.h>
#include <search.h>
#define ENV_CALLBACK_VAR ".callbacks"
/* Board configs can define additional static callback bindings */
#ifndef CONFIG_ENV_CALLBACK_LIST_STATIC
#define CONFIG_ENV_CALLBACK_LIST_STATIC
#endif
env: Add a silent env handler The silent variable now updates the global data flag anytime it is changed as well as after the env relocation (in case its value is different from the default env in such cases as NAND env) Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-12 04:16:30 +00:00
#ifdef CONFIG_SILENT_CONSOLE
#define SILENT_CALLBACK "silent:silent,"
#else
#define SILENT_CALLBACK
#endif
lcd: implement a callback for splashimage On some architectures certain values of splashimage will lead to a data abort exception. Document the problem, and implement a callback for splashimage to reject such values. Cc: Anatolij Gustschin <agust@denx.de> Cc: Wolfgang Denk <wd@denx.de> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
2013-02-24 21:28:43 +00:00
#ifdef CONFIG_SPLASHIMAGE_GUARD
#define SPLASHIMAGE_CALLBACK "splashimage:splashimage,"
#else
#define SPLASHIMAGE_CALLBACK
#endif
env: Add regex support to env_attrs Allow the features that use env_attrs to specify regexs for the name Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-20 19:27:20 +00:00
#ifdef CONFIG_REGEX
#define ENV_DOT_ESCAPE "\\"
#else
#define ENV_DOT_ESCAPE
#endif
net: Use env callbacks for net variables Instead of checking for changes to the env each time we enter the net_loop, use the env callbacks to update the values of the variables. Don't update the variables when the source was programmatic, since the variables were the source of the new value. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-20 19:27:23 +00:00
#ifdef CONFIG_CMD_DNS
#define DNS_CALLBACK "dnsip:dnsip,"
#else
#define DNS_CALLBACK
#endif
env: net: U_BOOT_ENV_CALLBACKs should not depend on CMD_NET Some environment variables are relevant for networking. For these U_BOOT_ENV_CALLBACKs have been defined. When the corresponding environment variable is updated the callback updates the state of the network sub-system. In the UEFI subsystem we can use the network even if CONFIG_CMD_NET is not defined. Let the usage of the U_BOOT_ENV_CALLBACKs depend on CONFIG_NET and not on CONFIG_CMD_NET. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-02 08:10:34 +00:00
#ifdef CONFIG_NET
net: Use env callbacks for net variables Instead of checking for changes to the env each time we enter the net_loop, use the env callbacks to update the values of the variables. Don't update the variables when the source was programmatic, since the variables were the source of the new value. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-20 19:27:23 +00:00
#define NET_CALLBACKS \
"bootfile:bootfile," \
"ipaddr:ipaddr," \
"gatewayip:gatewayip," \
"netmask:netmask," \
"serverip:serverip," \
"nvlan:nvlan," \
"vlan:vlan," \
net: Handle ethaddr changes as an env callback When the ethaddr is changed in the env, update the device pdata at the same time (only if it is probed for the DM case; only if registered for the non-DM case). Again this gets us closer to completely non-polled env needed to simplify the net_loop. This requires that the NET feature select the REGEX feature. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2015-05-20 19:27:26 +00:00
DNS_CALLBACK \
Allow CONFIG_REGEX to be disabled when CONFIG_NET Instead of selecting REGEX when NET is enabled, make it the default, but allow boards that are tiny to disable it and lose functionality on all but the first Ethernet adapter. cm-bf548, bf538f-ezkit, and bf533-stamp need this. None appear to have more than one Ethernet interface. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2015-06-22 22:57:36 +00:00
"eth" ETHADDR_WILDCARD "addr:ethaddr,"
net: Use env callbacks for net variables Instead of checking for changes to the env each time we enter the net_loop, use the env callbacks to update the values of the variables. Don't update the variables when the source was programmatic, since the variables were the source of the new value. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-20 19:27:23 +00:00
#else
#define NET_CALLBACKS
#endif
env: Add support for callbacks to environment vars Add support for per-variable callbacks to the "hashtable" functions. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> !!!fix comment in callback
2012-12-12 04:16:24 +00:00
/*
* This list of callback bindings is static, but may be overridden by defining
* a new association in the ".callbacks" environment variable.
*/
env: Add regex support to env_attrs Allow the features that use env_attrs to specify regexs for the name Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-20 19:27:20 +00:00
#define ENV_CALLBACK_LIST_STATIC ENV_DOT_ESCAPE ENV_CALLBACK_VAR ":callbacks," \
ENV_DOT_ESCAPE ENV_FLAGS_VAR ":flags," \
env: Add a baudrate env handler Remove the hard-coded baudrate handler and use a callback instead Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-12 04:16:27 +00:00
"baudrate:baudrate," \
net: Use env callbacks for net variables Instead of checking for changes to the env each time we enter the net_loop, use the env callbacks to update the values of the variables. Don't update the variables when the source was programmatic, since the variables were the source of the new value. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-20 19:27:23 +00:00
NET_CALLBACKS \
env: Add a loadaddr env handler Remove the hard-coded loadaddr handler and use a callback instead Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-12 04:16:28 +00:00
"loadaddr:loadaddr," \
env: Add a silent env handler The silent variable now updates the global data flag anytime it is changed as well as after the env relocation (in case its value is different from the default env in such cases as NAND env) Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-12 04:16:30 +00:00
SILENT_CALLBACK \
lcd: implement a callback for splashimage On some architectures certain values of splashimage will lead to a data abort exception. Document the problem, and implement a callback for splashimage to reject such values. Cc: Anatolij Gustschin <agust@denx.de> Cc: Wolfgang Denk <wd@denx.de> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
2013-02-24 21:28:43 +00:00
SPLASHIMAGE_CALLBACK \
env: Add a console env handler Remove the hard-coded console handler and use a callback instead Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2012-12-12 04:16:29 +00:00
"stdin:console,stdout:console,stderr:console," \
usb: gadget: g_dnl: Sync internal SN variable with env Since commit 842778a09104 ("usb: gadget: g_dnl: only set iSerialNumber if we have a serial#") "fastboot devices" stopped to show correct device serial number for TI boards, showing this line instead: ???????????? fastboot This is because serial# env variable could be set after g_dnl gadget was initialized (e.g. by using env_set() in the board file). To fix this, let's update internal serial number variable (g_dnl_serial) when "serial#" env var is changed. Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Tested-by: Heiko Schocher <hs@denx.de> Acked-by: Łukasz Majewski <lukma@denx.de> Reviewed-by: Marek Vasut <marex@denx.de>
2017-09-01 12:42:03 +00:00
"serial#:serialno," \
env: Add support for callbacks to environment vars Add support for per-variable callbacks to the "hashtable" functions. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> !!!fix comment in callback
2012-12-12 04:16:24 +00:00
CONFIG_ENV_CALLBACK_LIST_STATIC
env: remove callback.o for an SPL build env.h says this about about callback declarations (U_BOOT_ENV_CALLBACK): * For SPL these are silently dropped to reduce code size, since environment * callbacks are not supported with SPL. So env_callback_init() does a lot of work to not find anything in the guaranteed empty env_clbk list. Drop callback.o entirely from the link and stub out the only public function defined in callback.o. This cuts about 600 bytes from the SPL on my ppc build. Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-02-27 13:56:10 +00:00
#ifndef CONFIG_SPL_BUILD
env: Drop the ENTRY typedef U-Boot is not supposed to use typedef for structs anymore. Also this name is the same as the ENTRY() macro used in assembler files, and 'entry' itself is widely used in U-Boot (>8k matches). Drop the typedef and rename the struct to env_entry to reduce confusion. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-02 15:44:18 +00:00
void env_callback_init(struct env_entry *var_entry);
env: remove callback.o for an SPL build env.h says this about about callback declarations (U_BOOT_ENV_CALLBACK): * For SPL these are silently dropped to reduce code size, since environment * callbacks are not supported with SPL. So env_callback_init() does a lot of work to not find anything in the guaranteed empty env_clbk list. Drop callback.o entirely from the link and stub out the only public function defined in callback.o. This cuts about 600 bytes from the SPL on my ppc build. Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Reviewed-by: Simon Glass <sjg@chromium.org>
2020-02-27 13:56:10 +00:00
#else
static inline void env_callback_init(struct env_entry *var_entry)
{
}
#endif
env: Add support for callbacks to environment vars Add support for per-variable callbacks to the "hashtable" functions. Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> !!!fix comment in callback
2012-12-12 04:16:24 +00:00
#endif /* __ENV_CALLBACK_H__ */
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