1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2015 Google, Inc
3*4882a593Smuzhiyun * Written by Simon Glass <sjg@chromium.org>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <dm.h>
10*4882a593Smuzhiyun #include <errno.h>
11*4882a593Smuzhiyun #include <fdtdec.h>
12*4882a593Smuzhiyun #include <mmc.h>
13*4882a593Smuzhiyun #include <asm/test.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun struct sandbox_mmc_plat {
18*4882a593Smuzhiyun struct mmc_config cfg;
19*4882a593Smuzhiyun struct mmc mmc;
20*4882a593Smuzhiyun };
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun /**
23*4882a593Smuzhiyun * sandbox_mmc_send_cmd() - Emulate SD commands
24*4882a593Smuzhiyun *
25*4882a593Smuzhiyun * This emulate an SD card version 2. Single-block reads result in zero data.
26*4882a593Smuzhiyun * Multiple-block reads return a test string.
27*4882a593Smuzhiyun */
sandbox_mmc_send_cmd(struct udevice * dev,struct mmc_cmd * cmd,struct mmc_data * data)28*4882a593Smuzhiyun static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
29*4882a593Smuzhiyun struct mmc_data *data)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun switch (cmd->cmdidx) {
32*4882a593Smuzhiyun case MMC_CMD_ALL_SEND_CID:
33*4882a593Smuzhiyun break;
34*4882a593Smuzhiyun case SD_CMD_SEND_RELATIVE_ADDR:
35*4882a593Smuzhiyun cmd->response[0] = 0 << 16; /* mmc->rca */
36*4882a593Smuzhiyun case MMC_CMD_GO_IDLE_STATE:
37*4882a593Smuzhiyun break;
38*4882a593Smuzhiyun case SD_CMD_SEND_IF_COND:
39*4882a593Smuzhiyun cmd->response[0] = 0xaa;
40*4882a593Smuzhiyun break;
41*4882a593Smuzhiyun case MMC_CMD_SEND_STATUS:
42*4882a593Smuzhiyun cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
43*4882a593Smuzhiyun break;
44*4882a593Smuzhiyun case MMC_CMD_SELECT_CARD:
45*4882a593Smuzhiyun break;
46*4882a593Smuzhiyun case MMC_CMD_SEND_CSD:
47*4882a593Smuzhiyun cmd->response[0] = 0;
48*4882a593Smuzhiyun cmd->response[1] = 10 << 16; /* 1 << block_len */
49*4882a593Smuzhiyun break;
50*4882a593Smuzhiyun case SD_CMD_SWITCH_FUNC: {
51*4882a593Smuzhiyun u32 *resp = (u32 *)data->dest;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY);
54*4882a593Smuzhiyun break;
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun case MMC_CMD_READ_SINGLE_BLOCK:
57*4882a593Smuzhiyun memset(data->dest, '\0', data->blocksize);
58*4882a593Smuzhiyun break;
59*4882a593Smuzhiyun case MMC_CMD_READ_MULTIPLE_BLOCK:
60*4882a593Smuzhiyun strcpy(data->dest, "this is a test");
61*4882a593Smuzhiyun break;
62*4882a593Smuzhiyun case MMC_CMD_STOP_TRANSMISSION:
63*4882a593Smuzhiyun break;
64*4882a593Smuzhiyun case SD_CMD_APP_SEND_OP_COND:
65*4882a593Smuzhiyun cmd->response[0] = OCR_BUSY | OCR_HCS;
66*4882a593Smuzhiyun cmd->response[1] = 0;
67*4882a593Smuzhiyun cmd->response[2] = 0;
68*4882a593Smuzhiyun break;
69*4882a593Smuzhiyun case MMC_CMD_APP_CMD:
70*4882a593Smuzhiyun break;
71*4882a593Smuzhiyun case MMC_CMD_SET_BLOCKLEN:
72*4882a593Smuzhiyun debug("block len %d\n", cmd->cmdarg);
73*4882a593Smuzhiyun break;
74*4882a593Smuzhiyun case SD_CMD_APP_SEND_SCR: {
75*4882a593Smuzhiyun u32 *scr = (u32 *)data->dest;
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun scr[0] = cpu_to_be32(2 << 24 | 1 << 15); /* SD version 3 */
78*4882a593Smuzhiyun break;
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun default:
81*4882a593Smuzhiyun debug("%s: Unknown command %d\n", __func__, cmd->cmdidx);
82*4882a593Smuzhiyun break;
83*4882a593Smuzhiyun }
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun return 0;
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun
sandbox_mmc_set_ios(struct udevice * dev)88*4882a593Smuzhiyun static int sandbox_mmc_set_ios(struct udevice *dev)
89*4882a593Smuzhiyun {
90*4882a593Smuzhiyun return 0;
91*4882a593Smuzhiyun }
92*4882a593Smuzhiyun
sandbox_mmc_get_cd(struct udevice * dev)93*4882a593Smuzhiyun static int sandbox_mmc_get_cd(struct udevice *dev)
94*4882a593Smuzhiyun {
95*4882a593Smuzhiyun return 1;
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun static const struct dm_mmc_ops sandbox_mmc_ops = {
99*4882a593Smuzhiyun .send_cmd = sandbox_mmc_send_cmd,
100*4882a593Smuzhiyun .set_ios = sandbox_mmc_set_ios,
101*4882a593Smuzhiyun .get_cd = sandbox_mmc_get_cd,
102*4882a593Smuzhiyun };
103*4882a593Smuzhiyun
sandbox_mmc_probe(struct udevice * dev)104*4882a593Smuzhiyun int sandbox_mmc_probe(struct udevice *dev)
105*4882a593Smuzhiyun {
106*4882a593Smuzhiyun struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun return mmc_init(&plat->mmc);
109*4882a593Smuzhiyun }
110*4882a593Smuzhiyun
sandbox_mmc_bind(struct udevice * dev)111*4882a593Smuzhiyun int sandbox_mmc_bind(struct udevice *dev)
112*4882a593Smuzhiyun {
113*4882a593Smuzhiyun struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
114*4882a593Smuzhiyun struct mmc_config *cfg = &plat->cfg;
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun cfg->name = dev->name;
117*4882a593Smuzhiyun cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_8BIT;
118*4882a593Smuzhiyun cfg->voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
119*4882a593Smuzhiyun cfg->f_min = 1000000;
120*4882a593Smuzhiyun cfg->f_max = 52000000;
121*4882a593Smuzhiyun cfg->b_max = U32_MAX;
122*4882a593Smuzhiyun
123*4882a593Smuzhiyun return mmc_bind(dev, &plat->mmc, cfg);
124*4882a593Smuzhiyun }
125*4882a593Smuzhiyun
sandbox_mmc_unbind(struct udevice * dev)126*4882a593Smuzhiyun int sandbox_mmc_unbind(struct udevice *dev)
127*4882a593Smuzhiyun {
128*4882a593Smuzhiyun mmc_unbind(dev);
129*4882a593Smuzhiyun
130*4882a593Smuzhiyun return 0;
131*4882a593Smuzhiyun }
132*4882a593Smuzhiyun
133*4882a593Smuzhiyun static const struct udevice_id sandbox_mmc_ids[] = {
134*4882a593Smuzhiyun { .compatible = "sandbox,mmc" },
135*4882a593Smuzhiyun { }
136*4882a593Smuzhiyun };
137*4882a593Smuzhiyun
138*4882a593Smuzhiyun U_BOOT_DRIVER(mmc_sandbox) = {
139*4882a593Smuzhiyun .name = "mmc_sandbox",
140*4882a593Smuzhiyun .id = UCLASS_MMC,
141*4882a593Smuzhiyun .of_match = sandbox_mmc_ids,
142*4882a593Smuzhiyun .ops = &sandbox_mmc_ops,
143*4882a593Smuzhiyun .bind = sandbox_mmc_bind,
144*4882a593Smuzhiyun .unbind = sandbox_mmc_unbind,
145*4882a593Smuzhiyun .probe = sandbox_mmc_probe,
146*4882a593Smuzhiyun .platdata_auto_alloc_size = sizeof(struct sandbox_mmc_plat),
147*4882a593Smuzhiyun };
148