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Fri, 25 Oct 2024 22:22:00 +0200 (CEST) From: Bean Huo To: avri.altman@wdc.com, ulf.hansson@linaro.org, linux-mmc@vger.kernel.org, vfazio@xes-inc.com Cc: Bean Huo Subject: [PATCH v5 5/5] mmc-utils: Add FFU optional mode 4 for firmware download using repeated CMD24 single-block write command Date: Fri, 25 Oct 2024 22:21:48 +0200 Message-Id: <20241025202148.161586-6-beanhuo@iokpp.de> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241025202148.161586-1-beanhuo@iokpp.de> References: <20241025202148.161586-1-beanhuo@iokpp.de> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bean Huo Add FFU mode 4 which enters FFU mode with CMD6, followed by repeated CMD24 commands to perform single-block writes for the firmware download. After downloading all firmware data, CMD6 is issued to exit FFU mode. Signed-off-by: Bean Huo Acked-by: Avri Altman --- mmc.1 | 3 +++ mmc.c | 5 +++++ mmc_cmds.c | 36 ++++++++++++++++++++++++++---------- mmc_cmds.h | 1 + 4 files changed, 35 insertions(+), 10 deletions(-) diff --git a/mmc.1 b/mmc.1 index acb37c1..543742c 100644 --- a/mmc.1 +++ b/mmc.1 @@ -201,6 +201,9 @@ Optional FFU mode 2, uses CMD25+CMD12 Open-ended Multiple-block write to downloa .BI opt_ffu3 " \fIimage\-file\-name\fR " " \fIdevice\fR " " [\fIchunk\-bytes\fR] Optional FFU mode 3, uses CMD24 Single-block write for downloading, exiting FFU mode after each block is written. .TP +.BI opt_ffu4 " \fIimage\-file\-name\fR " " \fIdevice\fR " " [\fIchunk\-bytes\fR] +Optional FFU mode 4, uses CMD24 Single-block write for repeated downloads, remaining in FFU mode until completion. +.TP .BI erase " " \fItype\fR " " \fIstart-address\fR " " \fIend\-address\fR " " \fIdevice\fR Send Erase CMD38 with specific argument to the device. .br diff --git a/mmc.c b/mmc.c index d2a4d2a..077e901 100644 --- a/mmc.c +++ b/mmc.c @@ -249,6 +249,11 @@ static struct Command commands[] = { "Optional FFU mode 3, uses CMD24 Single-block write for downloading, exiting FFU mode after each block written.\n", NULL }, + { do_opt_ffu4, -2, + "opt_ffu4", " [chunk-bytes]\n" + "Optional FFU mode 4, uses CMD24 Single-block write for repeated downloads, remaining in FFU mode until completion.\n", + NULL + }, { do_erase, -4, "erase", " " " " " " "\n" "Send Erase CMD38 with specific argument to the \n\n" diff --git a/mmc_cmds.c b/mmc_cmds.c index 2553de2..dbe18ab 100644 --- a/mmc_cmds.c +++ b/mmc_cmds.c @@ -65,7 +65,8 @@ enum ffu_download_mode { FFU_DEFAULT_MODE, // Default mode: Uses CMD23+CMD25; exits FFU mode after each loop. FFU_OPT_MODE1, // Optional mode 1: Uses CMD23+CMD25; but stays in FFU mode during download. FFU_OPT_MODE2, // Optional mode 2: Uses CMD25+CMD12 Open-ended Multiple-block write to download - FFU_OPT_MODE3 // Optional mode 3: Uses CMD24 Single-block write to download + FFU_OPT_MODE3, // Optional mode 3: Uses CMD24 Single-block write to download + FFU_OPT_MODE4 // Optional mode 4: Uses CMD24 Single-block write to download, but stays in FFU mode during download. }; static inline __u32 per_byte_htole32(__u8 *arr) @@ -2866,6 +2867,9 @@ static void set_ffu_download_cmd(struct mmc_ioc_multi_cmd *multi_cmd, set_single_cmd(&multi_cmd->cmds[1], MMC_WRITE_BLOCK, 1, 1, arg); mmc_ioc_cmd_set_data(multi_cmd->cmds[1], buf + offset); fill_switch_cmd(&multi_cmd->cmds[2], EXT_CSD_MODE_CONFIG, EXT_CSD_NORMAL_MODE); + } else if (ffu_mode == FFU_OPT_MODE4) { + set_single_cmd(&multi_cmd->cmds[0], MMC_WRITE_BLOCK, 1, 1, arg); + mmc_ioc_cmd_set_data(multi_cmd->cmds[0], buf + offset); } } @@ -2973,6 +2977,9 @@ static int do_ffu_download(int dev_fd, __u8 *ext_csd, __u8 *fw_buf, off_t fw_siz } else if (ffu_mode == FFU_OPT_MODE3) { num_of_cmds = 3; /* in FFU_OPT_MODE3, mmc_ioc_multi_cmd contains 3 commands */ chunk_size = 512; /* FFU_OPT_MODE3 uses CMD24 single-block write */ + } else if (ffu_mode == FFU_OPT_MODE4) { + num_of_cmds = 1; /* in FFU_OPT_MODE4, it is single command mode */ + chunk_size = 512; /* FFU_OPT_MODE4 uses CMD24 single-block write */ } /* allocate maximum required */ @@ -2983,10 +2990,11 @@ static int do_ffu_download(int dev_fd, __u8 *ext_csd, __u8 *fw_buf, off_t fw_siz return -ENOMEM; } - if (ffu_mode == FFU_OPT_MODE1 || ffu_mode == FFU_OPT_MODE2) { + if (ffu_mode == FFU_OPT_MODE1 || ffu_mode == FFU_OPT_MODE2 || ffu_mode == FFU_OPT_MODE4) { /* - * In FFU_OPT_MODE1 and FFU_OPT_MODE2, the command to enter FFU mode will be sent - * independently, separate from the firmware bundle download command. + * In FFU_OPT_MODE1, FFU_OPT_MODE2 and FFU_OPT_MODE4, the command to enter FFU + * mode will be sent independently, separate from the firmware bundle download + * command. */ ret = enter_ffu_mode(dev_fd); if (ret) @@ -3004,11 +3012,14 @@ do_retry: /* prepare multi_cmd for FFU based on cmd to be used */ set_ffu_download_cmd(multi_cmd, ext_csd, bytes_per_loop, fw_buf, off, ffu_mode); - /* send ioctl with multi-cmd, download firmware bundle */ - ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd); + if (num_of_cmds > 1) + /* send ioctl with multi-cmd, download firmware bundle */ + ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd); + else + ret = ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[0]); if (ret) { - perror("Multi-cmd ioctl"); + perror("ioctl failed"); /* * In case multi-cmd ioctl failed before exiting from * ffu mode @@ -3040,10 +3051,10 @@ do_retry: off += bytes_per_loop; } - if (ffu_mode == FFU_OPT_MODE1 || ffu_mode == FFU_OPT_MODE2) { + if (ffu_mode == FFU_OPT_MODE1 || ffu_mode == FFU_OPT_MODE2 || ffu_mode == FFU_OPT_MODE4) { /* - * In FFU_OPT_MODE1 and FFU_OPT_MODE2, the command to exit FFU mode will be sent - * independently, separate from the firmware bundle download command. + * In FFU_OPT_MODE1, FFU_OPT_MODE2 and FFU_OPT_MODE4, the command to exit FFU mode + * will be sent independently, separate from the firmware bundle download command. */ ret = exit_ffu_mode(dev_fd); if (ret) @@ -3233,6 +3244,11 @@ int do_opt_ffu3(int nargs, char **argv) return __do_ffu(nargs, argv, FFU_OPT_MODE3); } +int do_opt_ffu4(int nargs, char **argv) +{ + return __do_ffu(nargs, argv, FFU_OPT_MODE4); +} + int do_general_cmd_read(int nargs, char **argv) { int dev_fd; diff --git a/mmc_cmds.h b/mmc_cmds.h index 0fbb2b5..407cbe6 100644 --- a/mmc_cmds.h +++ b/mmc_cmds.h @@ -45,6 +45,7 @@ int do_ffu(int nargs, char **argv); int do_opt_ffu1(int nargs, char **argv); int do_opt_ffu2(int nargs, char **argv); int do_opt_ffu3(int nargs, char **argv); +int do_opt_ffu4(int nargs, char **argv); int do_read_scr(int argc, char **argv); int do_read_cid(int argc, char **argv); int do_read_csd(int argc, char **argv);