From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 47656C5478C for ; Mon, 4 Mar 2024 14:43:39 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 6D16287FB9; Mon, 4 Mar 2024 15:43:16 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="ZB0yT4Uy"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id C065087FAE; Mon, 4 Mar 2024 15:43:15 +0100 (CET) Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 800EC87FAA for ; Mon, 4 Mar 2024 15:43:13 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=o451686892@gmail.com Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-1dc3b4b9b62so38969865ad.1 for ; Mon, 04 Mar 2024 06:43:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1709563392; x=1710168192; darn=lists.denx.de; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=IC7fwBnVFr7LZXSeRRyncmjuMuUcEgwgdmAWQJbhy2M=; b=ZB0yT4UyG0NDeyhQkQXH0KRYt5uhkYlyhnH0cFnoPXYWZ4aW+nHVm9zqKU30OB5tqx 0APzmOHpuIa33xVoJ9WKOIO1ibnPSTlenLPB1WUYm8Rfeo8Lq7mf7n8Z5ZZ6iQ7wAwPv FZfc0CzCnECiCBPfa2IraZVx/mwVbHx+H2ywzXgkuzTIHJsU3RYOEVk6iwt6z2RGyUXy q1x+Ci8fe0vNFGa3+5W7NJ5V7jOzzfJeqg9gHXKzl8riAc5oOvRwIrojGkHL6ujjHEJ+ hD0aVy9LdHmagaFARN3Y3jlUu5gc7BFxUvDqwtW16bblYzCppdIOjexSBL5WSsjEsNtl ankw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709563392; x=1710168192; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=IC7fwBnVFr7LZXSeRRyncmjuMuUcEgwgdmAWQJbhy2M=; b=c81pxqoV4jxgzJZjeRRVQGIRwEZrrwf/+0G4EUDlzzipzVk5s/mA0zRA0LglFsY9Re ID6Zi8xZyYQKfMe8FNwukJSSm+Ov1LfczDlLoCP9+ez82VkZDKg5rA6TJguTDR+iCVTF vhfXtSwOEX0Mnt9aoIoWWc4g16HAW9O5/astABK3nkgpJTLCgXgvLbAQ3N0XiYT0Jy43 BiYLrrUEjJGnNDUkt7IFm/xwhjP3ZHHtv5x+7x+U2cgfz9EC5ypyvoi81HR13ISv2qnM lw/qiF1MJJKfvBzUTYVZ5oGwxgzdD3bbO6dqsUflhQkshFZ4v1WjDi1YzfWHFpOlzjof 6mzw== X-Forwarded-Encrypted: i=1; AJvYcCWBmSbpHHQ7lbJ6mPDuMGDJql7tWuTv62wS/H4O844h5L0+6FCEKkil/JzwrHbr4uqDEFUpTUcerj9c613WJciGGdJiOw== X-Gm-Message-State: AOJu0YwvHidJ9XRYDnrkGJGGKztFEByTD3K0uvqPDyj/CTIYAGN2g1DZ rl64R9/CIQ56IVhjNHJh04zrpXfYKYzCnyMn1xk8wiXb6h/n03IU X-Google-Smtp-Source: AGHT+IHs1D3NAdT/9s2hyXFtiZ0ttPD8NcVLY4e9DDCeHFTOtljR7FMwGL3BHPb0mEuuH9cxKohtNg== X-Received: by 2002:a17:903:32cd:b0:1dc:fefe:8050 with SMTP id i13-20020a17090332cd00b001dcfefe8050mr7209705plr.29.1709563391648; Mon, 04 Mar 2024 06:43:11 -0800 (PST) Received: from ownia.localdomain ([8.210.91.195]) by smtp.gmail.com with ESMTPSA id lc8-20020a170902fa8800b001dc8923a2c4sm8629529plb.294.2024.03.04.06.43.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Mar 2024 06:43:11 -0800 (PST) From: Weizhao Ouyang To: Sughosh Ganu , Heinrich Schuchardt , Tom Rini , Etienne Carriere , Weizhao Ouyang , Simon Glass , Peng Fan , Ilias Apalodimas , Jens Wiklander , Abdellatif El Khlifi , u-boot@lists.denx.de Subject: [PATCH v4 3/3] cmd: rng: Add rng list command Date: Mon, 4 Mar 2024 14:42:42 +0000 Message-Id: <20240304144242.11666-4-o451686892@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240304144242.11666-1-o451686892@gmail.com> References: <20240304144242.11666-1-o451686892@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean The 'rng list' command probes all RNG devices and list those devices that are successfully probed. Also update the help info. Reviewed-by: Heinrich Schuchardt Signed-off-by: Weizhao Ouyang --- v4: update doc/usage/cmd/rng.rst --- cmd/rng.c | 23 ++++++++++++++++++----- doc/usage/cmd/rng.rst | 14 ++++++++++---- 2 files changed, 28 insertions(+), 9 deletions(-) diff --git a/cmd/rng.c b/cmd/rng.c index 52f722c7af..b073a6c849 100644 --- a/cmd/rng.c +++ b/cmd/rng.c @@ -19,6 +19,22 @@ static int do_rng(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) struct udevice *dev; int ret = CMD_RET_SUCCESS; + if (argc == 2 && !strcmp(argv[1], "list")) { + int idx = 0; + + uclass_foreach_dev_probe(UCLASS_RNG, dev) { + idx++; + printf("RNG #%d - %s\n", dev->seq_, dev->name); + } + + if (!idx) { + log_err("No RNG device\n"); + return CMD_RET_FAILURE; + } + + return CMD_RET_SUCCESS; + } + switch (argc) { case 1: devnum = 0; @@ -56,12 +72,9 @@ static int do_rng(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) return ret; } -U_BOOT_LONGHELP(rng, - "[dev [n]]\n" - " - print n random bytes(max 64) read from dev\n"); - U_BOOT_CMD( rng, 3, 0, do_rng, "print bytes from the hardware random number generator", - rng_help_text + "list - list all the probed rng devices\n" + "rng [dev] [n] - print n random bytes(max 64) read from dev\n" ); diff --git a/doc/usage/cmd/rng.rst b/doc/usage/cmd/rng.rst index 274e4d88df..4a61e33d27 100644 --- a/doc/usage/cmd/rng.rst +++ b/doc/usage/cmd/rng.rst @@ -11,16 +11,22 @@ Synopsis :: - rng [devnum [n]] + rng list + rng [dev] [n] -Description ------------ +rng list +-------- + +List all the probed rng devices. + +rng [dev] [n] +------------- The *rng* command reads the random number generator(RNG) device and prints the random bytes read on the console. A maximum of 64 bytes can be read in one invocation of the command. -devnum +dev The RNG device from which the random bytes are to be read. Defaults to 0. -- 2.40.1