For SPL builds this is just dead code since we'll only need to read. Eliminating it results in a significant size reduction for the SPL binary, which may be critical for certain platforms where the binary size is highly constrained. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>master
Paul Burton
11 years ago
committed by
Pantelis Antoniou
parent
8687d5c80c
commit
da61fa5f42
@ -0,0 +1,45 @@ |
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/*
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* Copyright 2008,2010 Freescale Semiconductor, Inc |
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* Andy Fleming |
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* |
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* Based (loosely) on the Linux code |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef _MMC_PRIVATE_H_ |
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#define _MMC_PRIVATE_H_ |
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#include <mmc.h> |
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extern int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, |
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struct mmc_data *data); |
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extern int mmc_send_status(struct mmc *mmc, int timeout); |
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extern int mmc_set_blocklen(struct mmc *mmc, int len); |
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#ifndef CONFIG_SPL_BUILD |
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extern unsigned long mmc_berase(int dev_num, lbaint_t start, lbaint_t blkcnt); |
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extern ulong mmc_bwrite(int dev_num, lbaint_t start, lbaint_t blkcnt, |
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const void *src); |
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#else /* CONFIG_SPL_BUILD */ |
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/* SPL will never write or erase, declare dummies to reduce code size. */ |
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static inline unsigned long mmc_berase(int dev_num, lbaint_t start, |
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lbaint_t blkcnt) |
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{ |
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return 0; |
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} |
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static inline ulong mmc_bwrite(int dev_num, lbaint_t start, lbaint_t blkcnt, |
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const void *src) |
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{ |
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return 0; |
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} |
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#endif /* CONFIG_SPL_BUILD */ |
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#endif /* _MMC_PRIVATE_H_ */ |
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@ -0,0 +1,179 @@ |
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/*
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* Copyright 2008, Freescale Semiconductor, Inc |
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* Andy Fleming |
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* |
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* Based vaguely on the Linux code |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <config.h> |
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#include <common.h> |
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#include <part.h> |
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#include "mmc_private.h" |
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static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt) |
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{ |
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struct mmc_cmd cmd; |
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ulong end; |
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int err, start_cmd, end_cmd; |
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if (mmc->high_capacity) { |
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end = start + blkcnt - 1; |
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} else { |
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end = (start + blkcnt - 1) * mmc->write_bl_len; |
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start *= mmc->write_bl_len; |
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} |
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if (IS_SD(mmc)) { |
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start_cmd = SD_CMD_ERASE_WR_BLK_START; |
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end_cmd = SD_CMD_ERASE_WR_BLK_END; |
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} else { |
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start_cmd = MMC_CMD_ERASE_GROUP_START; |
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end_cmd = MMC_CMD_ERASE_GROUP_END; |
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} |
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cmd.cmdidx = start_cmd; |
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cmd.cmdarg = start; |
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cmd.resp_type = MMC_RSP_R1; |
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err = mmc_send_cmd(mmc, &cmd, NULL); |
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if (err) |
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goto err_out; |
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cmd.cmdidx = end_cmd; |
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cmd.cmdarg = end; |
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err = mmc_send_cmd(mmc, &cmd, NULL); |
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if (err) |
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goto err_out; |
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cmd.cmdidx = MMC_CMD_ERASE; |
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cmd.cmdarg = SECURE_ERASE; |
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cmd.resp_type = MMC_RSP_R1b; |
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err = mmc_send_cmd(mmc, &cmd, NULL); |
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if (err) |
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goto err_out; |
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return 0; |
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err_out: |
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puts("mmc erase failed\n"); |
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return err; |
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} |
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unsigned long mmc_berase(int dev_num, lbaint_t start, lbaint_t blkcnt) |
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{ |
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int err = 0; |
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struct mmc *mmc = find_mmc_device(dev_num); |
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lbaint_t blk = 0, blk_r = 0; |
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int timeout = 1000; |
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if (!mmc) |
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return -1; |
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if ((start % mmc->erase_grp_size) || (blkcnt % mmc->erase_grp_size)) |
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printf("\n\nCaution! Your devices Erase group is 0x%x\n" |
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"The erase range would be change to " |
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"0x" LBAF "~0x" LBAF "\n\n", |
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mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1), |
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((start + blkcnt + mmc->erase_grp_size) |
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& ~(mmc->erase_grp_size - 1)) - 1); |
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while (blk < blkcnt) { |
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blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ? |
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mmc->erase_grp_size : (blkcnt - blk); |
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err = mmc_erase_t(mmc, start + blk, blk_r); |
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if (err) |
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break; |
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blk += blk_r; |
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/* Waiting for the ready status */ |
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if (mmc_send_status(mmc, timeout)) |
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return 0; |
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} |
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return blk; |
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} |
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static ulong mmc_write_blocks(struct mmc *mmc, lbaint_t start, |
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lbaint_t blkcnt, const void *src) |
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{ |
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struct mmc_cmd cmd; |
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struct mmc_data data; |
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int timeout = 1000; |
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if ((start + blkcnt) > mmc->block_dev.lba) { |
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printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n", |
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start + blkcnt, mmc->block_dev.lba); |
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return 0; |
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} |
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if (blkcnt == 0) |
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return 0; |
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else if (blkcnt == 1) |
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cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; |
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else |
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cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; |
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if (mmc->high_capacity) |
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cmd.cmdarg = start; |
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else |
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cmd.cmdarg = start * mmc->write_bl_len; |
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cmd.resp_type = MMC_RSP_R1; |
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data.src = src; |
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data.blocks = blkcnt; |
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data.blocksize = mmc->write_bl_len; |
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data.flags = MMC_DATA_WRITE; |
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if (mmc_send_cmd(mmc, &cmd, &data)) { |
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printf("mmc write failed\n"); |
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return 0; |
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} |
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/* SPI multiblock writes terminate using a special
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* token, not a STOP_TRANSMISSION request. |
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*/ |
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if (!mmc_host_is_spi(mmc) && blkcnt > 1) { |
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cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; |
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cmd.cmdarg = 0; |
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cmd.resp_type = MMC_RSP_R1b; |
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if (mmc_send_cmd(mmc, &cmd, NULL)) { |
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printf("mmc fail to send stop cmd\n"); |
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return 0; |
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} |
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} |
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/* Waiting for the ready status */ |
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if (mmc_send_status(mmc, timeout)) |
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return 0; |
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return blkcnt; |
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} |
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ulong mmc_bwrite(int dev_num, lbaint_t start, lbaint_t blkcnt, const void *src) |
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{ |
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lbaint_t cur, blocks_todo = blkcnt; |
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struct mmc *mmc = find_mmc_device(dev_num); |
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if (!mmc) |
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return 0; |
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if (mmc_set_blocklen(mmc, mmc->write_bl_len)) |
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return 0; |
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do { |
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cur = (blocks_todo > mmc->b_max) ? mmc->b_max : blocks_todo; |
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if (mmc_write_blocks(mmc, start, cur, src) != cur) |
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return 0; |
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blocks_todo -= cur; |
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start += cur; |
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src += cur * mmc->write_bl_len; |
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} while (blocks_todo > 0); |
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return blkcnt; |
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} |
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