From c8c3fd24cc0dd9512237dc13528e90eb46e704a7 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Tue, 17 Jan 2023 10:47:39 -0700 Subject: net: Add a function to run dhcp At present this must be done by executing the command. Also it involves fiddling with the environment to determine the correct autoload behaviour. Ideally it should be possible to run network operations without even having the command line present (CONFIG_CMDLINE). For now, add a function to handle DHCP, so it can be called from a bootdev more easily. Signed-off-by: Simon Glass Reviewed-by: Ramon Fried --- cmd/net.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'cmd/net.c') diff --git a/cmd/net.c b/cmd/net.c index dd50930a362..4227321871c 100644 --- a/cmd/net.c +++ b/cmd/net.c @@ -4,6 +4,8 @@ * Wolfgang Denk, DENX Software Engineering, wd@denx.de. */ +#define LOG_CATEGORY UCLASS_ETH + /* * Boot support */ @@ -13,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -120,6 +123,38 @@ U_BOOT_CMD( "boot image via network using DHCP/TFTP protocol", "[loadAddress] [[hostIPaddr:]bootfilename]" ); + +int dhcp_run(ulong addr, const char *fname, bool autoload) +{ + char *dhcp_argv[] = {"dhcp", NULL, (char *)fname, NULL}; + struct cmd_tbl cmdtp = {}; /* dummy */ + char file_addr[17]; + int old_autoload; + int ret, result; + + log_debug("addr=%lx, fname=%s, autoload=%d\n", addr, fname, autoload); + old_autoload = env_get_yesno("autoload"); + ret = env_set("autoload", autoload ? "y" : "n"); + if (ret) + return log_msg_ret("en1", -EINVAL); + + if (autoload) { + sprintf(file_addr, "%lx", addr); + dhcp_argv[1] = file_addr; + } + + result = do_dhcp(&cmdtp, 0, !autoload ? 1 : fname ? 3 : 2, dhcp_argv); + + ret = env_set("autoload", old_autoload == -1 ? NULL : + old_autoload ? "y" : "n"); + if (ret) + return log_msg_ret("en2", -EINVAL); + + if (result) + return log_msg_ret("res", -ENOENT); + + return 0; +} #endif #if defined(CONFIG_CMD_NFS) -- cgit v1.2.3