18e6cc461SSimon Glass /* 28e6cc461SSimon Glass * Copyright (c) 2015 Google, Inc 38e6cc461SSimon Glass * Written by Simon Glass <sjg@chromium.org> 48e6cc461SSimon Glass * 58e6cc461SSimon Glass * SPDX-License-Identifier: GPL-2.0+ 68e6cc461SSimon Glass */ 78e6cc461SSimon Glass 88e6cc461SSimon Glass #include <common.h> 98e6cc461SSimon Glass #include <dm.h> 108e6cc461SSimon Glass #include <errno.h> 11*f376a3cbSSimon Glass #include <fdtdec.h> 128e6cc461SSimon Glass #include <mmc.h> 138e6cc461SSimon Glass #include <asm/test.h> 148e6cc461SSimon Glass 158e6cc461SSimon Glass DECLARE_GLOBAL_DATA_PTR; 168e6cc461SSimon Glass 17*f376a3cbSSimon Glass struct sandbox_mmc_plat { 18*f376a3cbSSimon Glass struct mmc_config cfg; 19*f376a3cbSSimon Glass struct mmc mmc; 20*f376a3cbSSimon Glass }; 21*f376a3cbSSimon Glass 22*f376a3cbSSimon Glass /** 23*f376a3cbSSimon Glass * sandbox_mmc_send_cmd() - Emulate SD commands 24*f376a3cbSSimon Glass * 25*f376a3cbSSimon Glass * This emulate an SD card version 2. Single-block reads result in zero data. 26*f376a3cbSSimon Glass * Multiple-block reads return a test string. 27*f376a3cbSSimon Glass */ 28*f376a3cbSSimon Glass static int sandbox_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, 29*f376a3cbSSimon Glass struct mmc_data *data) 30*f376a3cbSSimon Glass { 31*f376a3cbSSimon Glass switch (cmd->cmdidx) { 32*f376a3cbSSimon Glass case MMC_CMD_ALL_SEND_CID: 33*f376a3cbSSimon Glass break; 34*f376a3cbSSimon Glass case SD_CMD_SEND_RELATIVE_ADDR: 35*f376a3cbSSimon Glass cmd->response[0] = 0 << 16; /* mmc->rca */ 36*f376a3cbSSimon Glass case MMC_CMD_GO_IDLE_STATE: 37*f376a3cbSSimon Glass break; 38*f376a3cbSSimon Glass case SD_CMD_SEND_IF_COND: 39*f376a3cbSSimon Glass cmd->response[0] = 0xaa; 40*f376a3cbSSimon Glass break; 41*f376a3cbSSimon Glass case MMC_CMD_SEND_STATUS: 42*f376a3cbSSimon Glass cmd->response[0] = MMC_STATUS_RDY_FOR_DATA; 43*f376a3cbSSimon Glass break; 44*f376a3cbSSimon Glass case MMC_CMD_SELECT_CARD: 45*f376a3cbSSimon Glass break; 46*f376a3cbSSimon Glass case MMC_CMD_SEND_CSD: 47*f376a3cbSSimon Glass cmd->response[0] = 0; 48*f376a3cbSSimon Glass cmd->response[1] = 10 << 16; /* 1 << block_len */ 49*f376a3cbSSimon Glass break; 50*f376a3cbSSimon Glass case SD_CMD_SWITCH_FUNC: { 51*f376a3cbSSimon Glass u32 *resp = (u32 *)data->dest; 52*f376a3cbSSimon Glass 53*f376a3cbSSimon Glass resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY); 54*f376a3cbSSimon Glass break; 55*f376a3cbSSimon Glass } 56*f376a3cbSSimon Glass case MMC_CMD_READ_SINGLE_BLOCK: 57*f376a3cbSSimon Glass memset(data->dest, '\0', data->blocksize); 58*f376a3cbSSimon Glass break; 59*f376a3cbSSimon Glass case MMC_CMD_READ_MULTIPLE_BLOCK: 60*f376a3cbSSimon Glass strcpy(data->dest, "this is a test"); 61*f376a3cbSSimon Glass break; 62*f376a3cbSSimon Glass case MMC_CMD_STOP_TRANSMISSION: 63*f376a3cbSSimon Glass break; 64*f376a3cbSSimon Glass case SD_CMD_APP_SEND_OP_COND: 65*f376a3cbSSimon Glass cmd->response[0] = OCR_BUSY | OCR_HCS; 66*f376a3cbSSimon Glass cmd->response[1] = 0; 67*f376a3cbSSimon Glass cmd->response[2] = 0; 68*f376a3cbSSimon Glass break; 69*f376a3cbSSimon Glass case MMC_CMD_APP_CMD: 70*f376a3cbSSimon Glass break; 71*f376a3cbSSimon Glass case MMC_CMD_SET_BLOCKLEN: 72*f376a3cbSSimon Glass debug("block len %d\n", cmd->cmdarg); 73*f376a3cbSSimon Glass break; 74*f376a3cbSSimon Glass case SD_CMD_APP_SEND_SCR: { 75*f376a3cbSSimon Glass u32 *scr = (u32 *)data->dest; 76*f376a3cbSSimon Glass 77*f376a3cbSSimon Glass scr[0] = cpu_to_be32(2 << 24 | 1 << 15); /* SD version 3 */ 78*f376a3cbSSimon Glass break; 79*f376a3cbSSimon Glass } 80*f376a3cbSSimon Glass default: 81*f376a3cbSSimon Glass debug("%s: Unknown command %d\n", __func__, cmd->cmdidx); 82*f376a3cbSSimon Glass break; 83*f376a3cbSSimon Glass } 84*f376a3cbSSimon Glass 85*f376a3cbSSimon Glass return 0; 86*f376a3cbSSimon Glass } 87*f376a3cbSSimon Glass 88*f376a3cbSSimon Glass static void sandbox_mmc_set_ios(struct mmc *mmc) 89*f376a3cbSSimon Glass { 90*f376a3cbSSimon Glass } 91*f376a3cbSSimon Glass 92*f376a3cbSSimon Glass static int sandbox_mmc_init(struct mmc *mmc) 93*f376a3cbSSimon Glass { 94*f376a3cbSSimon Glass return 0; 95*f376a3cbSSimon Glass } 96*f376a3cbSSimon Glass 97*f376a3cbSSimon Glass static int sandbox_mmc_getcd(struct mmc *mmc) 98*f376a3cbSSimon Glass { 99*f376a3cbSSimon Glass return 1; 100*f376a3cbSSimon Glass } 101*f376a3cbSSimon Glass 102*f376a3cbSSimon Glass static const struct mmc_ops sandbox_mmc_ops = { 103*f376a3cbSSimon Glass .send_cmd = sandbox_mmc_send_cmd, 104*f376a3cbSSimon Glass .set_ios = sandbox_mmc_set_ios, 105*f376a3cbSSimon Glass .init = sandbox_mmc_init, 106*f376a3cbSSimon Glass .getcd = sandbox_mmc_getcd, 107*f376a3cbSSimon Glass }; 108*f376a3cbSSimon Glass 109*f376a3cbSSimon Glass int sandbox_mmc_probe(struct udevice *dev) 110*f376a3cbSSimon Glass { 111*f376a3cbSSimon Glass struct sandbox_mmc_plat *plat = dev_get_platdata(dev); 112*f376a3cbSSimon Glass 113*f376a3cbSSimon Glass return mmc_init(&plat->mmc); 114*f376a3cbSSimon Glass } 115*f376a3cbSSimon Glass 116*f376a3cbSSimon Glass int sandbox_mmc_bind(struct udevice *dev) 117*f376a3cbSSimon Glass { 118*f376a3cbSSimon Glass struct sandbox_mmc_plat *plat = dev_get_platdata(dev); 119*f376a3cbSSimon Glass struct mmc_config *cfg = &plat->cfg; 120*f376a3cbSSimon Glass int ret; 121*f376a3cbSSimon Glass 122*f376a3cbSSimon Glass cfg->name = dev->name; 123*f376a3cbSSimon Glass cfg->ops = &sandbox_mmc_ops; 124*f376a3cbSSimon Glass cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_8BIT; 125*f376a3cbSSimon Glass cfg->voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34; 126*f376a3cbSSimon Glass cfg->f_min = 1000000; 127*f376a3cbSSimon Glass cfg->f_max = 52000000; 128*f376a3cbSSimon Glass cfg->b_max = U32_MAX; 129*f376a3cbSSimon Glass 130*f376a3cbSSimon Glass ret = mmc_bind(dev, &plat->mmc, cfg); 131*f376a3cbSSimon Glass if (ret) 132*f376a3cbSSimon Glass return ret; 133*f376a3cbSSimon Glass 134*f376a3cbSSimon Glass return 0; 135*f376a3cbSSimon Glass } 136*f376a3cbSSimon Glass 137*f376a3cbSSimon Glass int sandbox_mmc_unbind(struct udevice *dev) 138*f376a3cbSSimon Glass { 139*f376a3cbSSimon Glass mmc_unbind(dev); 140*f376a3cbSSimon Glass 141*f376a3cbSSimon Glass return 0; 142*f376a3cbSSimon Glass } 143*f376a3cbSSimon Glass 1448e6cc461SSimon Glass static const struct udevice_id sandbox_mmc_ids[] = { 1458e6cc461SSimon Glass { .compatible = "sandbox,mmc" }, 1468e6cc461SSimon Glass { } 1478e6cc461SSimon Glass }; 1488e6cc461SSimon Glass 149*f376a3cbSSimon Glass U_BOOT_DRIVER(mmc_sandbox) = { 1508e6cc461SSimon Glass .name = "mmc_sandbox", 1518e6cc461SSimon Glass .id = UCLASS_MMC, 1528e6cc461SSimon Glass .of_match = sandbox_mmc_ids, 153*f376a3cbSSimon Glass .bind = sandbox_mmc_bind, 154*f376a3cbSSimon Glass .unbind = sandbox_mmc_unbind, 155*f376a3cbSSimon Glass .probe = sandbox_mmc_probe, 156*f376a3cbSSimon Glass .platdata_auto_alloc_size = sizeof(struct sandbox_mmc_plat), 1578e6cc461SSimon Glass }; 158