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Simon Glass8e6cc462015-07-06 12:54:32 -06001/*
2 * Copyright (c) 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8#include <common.h>
9#include <dm.h>
10#include <errno.h>
Simon Glassf376a3c2016-05-01 13:52:42 -060011#include <fdtdec.h>
Simon Glass8e6cc462015-07-06 12:54:32 -060012#include <mmc.h>
13#include <asm/test.h>
14
15DECLARE_GLOBAL_DATA_PTR;
16
Simon Glassf376a3c2016-05-01 13:52:42 -060017struct sandbox_mmc_plat {
18 struct mmc_config cfg;
19 struct mmc mmc;
20};
21
22/**
23 * sandbox_mmc_send_cmd() - Emulate SD commands
24 *
25 * This emulate an SD card version 2. Single-block reads result in zero data.
26 * Multiple-block reads return a test string.
27 */
Simon Glass9a46bd32016-06-12 23:30:26 -060028static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
Simon Glassf376a3c2016-05-01 13:52:42 -060029 struct mmc_data *data)
30{
31 switch (cmd->cmdidx) {
32 case MMC_CMD_ALL_SEND_CID:
33 break;
34 case SD_CMD_SEND_RELATIVE_ADDR:
35 cmd->response[0] = 0 << 16; /* mmc->rca */
36 case MMC_CMD_GO_IDLE_STATE:
37 break;
38 case SD_CMD_SEND_IF_COND:
39 cmd->response[0] = 0xaa;
40 break;
41 case MMC_CMD_SEND_STATUS:
42 cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
43 break;
44 case MMC_CMD_SELECT_CARD:
45 break;
46 case MMC_CMD_SEND_CSD:
47 cmd->response[0] = 0;
48 cmd->response[1] = 10 << 16; /* 1 << block_len */
49 break;
50 case SD_CMD_SWITCH_FUNC: {
51 u32 *resp = (u32 *)data->dest;
52
53 resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY);
54 break;
55 }
56 case MMC_CMD_READ_SINGLE_BLOCK:
57 memset(data->dest, '\0', data->blocksize);
58 break;
59 case MMC_CMD_READ_MULTIPLE_BLOCK:
60 strcpy(data->dest, "this is a test");
61 break;
62 case MMC_CMD_STOP_TRANSMISSION:
63 break;
64 case SD_CMD_APP_SEND_OP_COND:
65 cmd->response[0] = OCR_BUSY | OCR_HCS;
66 cmd->response[1] = 0;
67 cmd->response[2] = 0;
68 break;
69 case MMC_CMD_APP_CMD:
70 break;
71 case MMC_CMD_SET_BLOCKLEN:
72 debug("block len %d\n", cmd->cmdarg);
73 break;
74 case SD_CMD_APP_SEND_SCR: {
75 u32 *scr = (u32 *)data->dest;
76
77 scr[0] = cpu_to_be32(2 << 24 | 1 << 15); /* SD version 3 */
78 break;
79 }
80 default:
81 debug("%s: Unknown command %d\n", __func__, cmd->cmdidx);
82 break;
83 }
84
85 return 0;
86}
87
Simon Glass9a46bd32016-06-12 23:30:26 -060088static int sandbox_mmc_set_ios(struct udevice *dev)
Simon Glassf376a3c2016-05-01 13:52:42 -060089{
90 return 0;
91}
92
Simon Glass9a46bd32016-06-12 23:30:26 -060093static int sandbox_mmc_get_cd(struct udevice *dev)
Simon Glassf376a3c2016-05-01 13:52:42 -060094{
95 return 1;
96}
97
Simon Glass9a46bd32016-06-12 23:30:26 -060098static const struct dm_mmc_ops sandbox_mmc_ops = {
Simon Glassf376a3c2016-05-01 13:52:42 -060099 .send_cmd = sandbox_mmc_send_cmd,
100 .set_ios = sandbox_mmc_set_ios,
Simon Glass9a46bd32016-06-12 23:30:26 -0600101 .get_cd = sandbox_mmc_get_cd,
Simon Glassf376a3c2016-05-01 13:52:42 -0600102};
103
104int sandbox_mmc_probe(struct udevice *dev)
105{
106 struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
107
108 return mmc_init(&plat->mmc);
109}
110
111int sandbox_mmc_bind(struct udevice *dev)
112{
113 struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
114 struct mmc_config *cfg = &plat->cfg;
Simon Glassf376a3c2016-05-01 13:52:42 -0600115
116 cfg->name = dev->name;
Simon Glassf376a3c2016-05-01 13:52:42 -0600117 cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_8BIT;
118 cfg->voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
119 cfg->f_min = 1000000;
120 cfg->f_max = 52000000;
121 cfg->b_max = U32_MAX;
122
Masahiro Yamada24f5aec2016-09-06 22:17:32 +0900123 return mmc_bind(dev, &plat->mmc, cfg);
Simon Glassf376a3c2016-05-01 13:52:42 -0600124}
125
126int sandbox_mmc_unbind(struct udevice *dev)
127{
128 mmc_unbind(dev);
129
130 return 0;
131}
132
Simon Glass8e6cc462015-07-06 12:54:32 -0600133static const struct udevice_id sandbox_mmc_ids[] = {
134 { .compatible = "sandbox,mmc" },
135 { }
136};
137
Simon Glassf376a3c2016-05-01 13:52:42 -0600138U_BOOT_DRIVER(mmc_sandbox) = {
Simon Glass8e6cc462015-07-06 12:54:32 -0600139 .name = "mmc_sandbox",
140 .id = UCLASS_MMC,
141 .of_match = sandbox_mmc_ids,
Simon Glass9a46bd32016-06-12 23:30:26 -0600142 .ops = &sandbox_mmc_ops,
Simon Glassf376a3c2016-05-01 13:52:42 -0600143 .bind = sandbox_mmc_bind,
144 .unbind = sandbox_mmc_unbind,
145 .probe = sandbox_mmc_probe,
146 .platdata_auto_alloc_size = sizeof(struct sandbox_mmc_plat),
Simon Glass8e6cc462015-07-06 12:54:32 -0600147};