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authorAntonio Niño Díaz <antonio.ninodiaz@arm.com>2019-02-04 11:26:00 +0000
committerGitHub <noreply@github.com>2019-02-04 11:26:00 +0000
commit5735057d15ab5e36bd2640476a23dd1ead66254c (patch)
treedc917df9a23248120e2a56b3942b9a441cc9dfaf /include
parent0d8453564bb362dd044bceba05c3bfb9c8ee94ec (diff)
parent92d2f4912184e88b8efaacdb45fd17569bdfabf3 (diff)
downloadtrusted-firmware-a-5735057d15ab5e36bd2640476a23dd1ead66254c.tar.gz
Merge pull request #1796 from grandpaul/rpi3-sdhost-driver
RPi3 SDHost driver
Diffstat (limited to 'include')
-rw-r--r--include/drivers/rpi3/sdhost/rpi3_sdhost.h124
1 files changed, 124 insertions, 0 deletions
diff --git a/include/drivers/rpi3/sdhost/rpi3_sdhost.h b/include/drivers/rpi3/sdhost/rpi3_sdhost.h
new file mode 100644
index 0000000000..bc906e3949
--- /dev/null
+++ b/include/drivers/rpi3/sdhost/rpi3_sdhost.h
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2019, Linaro Limited
+ * Copyright (c) 2019, Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RPI3_SDHOST_H
+#define RPI3_SDHOST_H
+
+#include <drivers/mmc.h>
+#include <stdint.h>
+#include <platform_def.h>
+
+struct rpi3_sdhost_params {
+ uintptr_t reg_base;
+ uint32_t clk_rate;
+ uint32_t bus_width;
+ uint32_t flags;
+ uint32_t current_cmd;
+ uint8_t cmdbusy;
+ uint8_t mmc_app_cmd;
+ uint32_t ns_per_fifo_word;
+ uint32_t crc_err_retries;
+
+ uint32_t sdcard_rca;
+ uint32_t gpio48_pinselect[6];
+};
+
+void rpi3_sdhost_init(struct rpi3_sdhost_params *params,
+ struct mmc_device_info *mmc_dev_info);
+void rpi3_sdhost_stop(void);
+
+/* Registers */
+#define HC_COMMAND 0x00 /* Command and flags */
+#define HC_ARGUMENT 0x04
+#define HC_TIMEOUTCOUNTER 0x08
+#define HC_CLOCKDIVISOR 0x0c
+#define HC_RESPONSE_0 0x10
+#define HC_RESPONSE_1 0x14
+#define HC_RESPONSE_2 0x18
+#define HC_RESPONSE_3 0x1c
+#define HC_HOSTSTATUS 0x20
+#define HC_POWER 0x30
+#define HC_DEBUG 0x34
+#define HC_HOSTCONFIG 0x38
+#define HC_BLOCKSIZE 0x3c
+#define HC_DATAPORT 0x40
+#define HC_BLOCKCOUNT 0x50
+
+/* Flags for HC_COMMAND register */
+#define HC_CMD_ENABLE 0x8000
+#define HC_CMD_FAILED 0x4000
+#define HC_CMD_BUSY 0x0800
+#define HC_CMD_RESPONSE_NONE 0x0400
+#define HC_CMD_RESPONSE_LONG 0x0200
+#define HC_CMD_WRITE 0x0080
+#define HC_CMD_READ 0x0040
+#define HC_CMD_COMMAND_MASK 0x003f
+
+#define HC_CLOCKDIVISOR_MAXVAL 0x07ff
+#define HC_CLOCKDIVISOR_PREFERVAL 0x027b
+#define HC_CLOCKDIVISOR_SLOWVAL 0x0148
+#define HC_CLOCKDIVISOR_STOPVAL 0x01fb
+
+/* Flags for HC_HOSTSTATUS register */
+#define HC_HSTST_HAVEDATA 0x0001
+#define HC_HSTST_ERROR_FIFO 0x0008
+#define HC_HSTST_ERROR_CRC7 0x0010
+#define HC_HSTST_ERROR_CRC16 0x0020
+#define HC_HSTST_TIMEOUT_CMD 0x0040
+#define HC_HSTST_TIMEOUT_DATA 0x0080
+#define HC_HSTST_INT_BLOCK 0x0200
+#define HC_HSTST_INT_BUSY 0x0400
+
+#define HC_HSTST_RESET 0xffff
+
+#define HC_HSTST_MASK_ERROR_DATA (HC_HSTST_ERROR_FIFO | \
+ HC_HSTST_ERROR_CRC7 | \
+ HC_HSTST_ERROR_CRC16 | \
+ HC_HSTST_TIMEOUT_DATA)
+
+#define HC_HSTST_MASK_ERROR_ALL (HC_HSTST_MASK_ERROR_DATA | \
+ HC_HSTST_TIMEOUT_CMD)
+
+/* Flags for HC_HOSTCONFIG register */
+#define HC_HSTCF_INTBUS_WIDE 0x0002
+#define HC_HSTCF_EXTBUS_4BIT 0x0004
+#define HC_HSTCF_SLOW_CARD 0x0008
+#define HC_HSTCF_INT_DATA 0x0010
+#define HC_HSTCF_INT_BLOCK 0x0100
+#define HC_HSTCF_INT_BUSY 0x0400
+
+/* Flags for HC_DEBUG register */
+#define HC_DBG_FIFO_THRESH_WRITE_SHIFT 9
+#define HC_DBG_FIFO_THRESH_READ_SHIFT 14
+#define HC_DBG_FIFO_THRESH_MASK 0x001f
+#define HC_DBG_FSM_MASK 0xf
+#define HC_DBG_FSM_IDENTMODE 0x0
+#define HC_DBG_FSM_DATAMODE 0x1
+#define HC_DBG_FSM_READDATA 0x2
+#define HC_DBG_FSM_WRITEDATA 0x3
+#define HC_DBG_FSM_READWAIT 0x4
+#define HC_DBG_FSM_READCRC 0x5
+#define HC_DBG_FSM_WRITECRC 0x6
+#define HC_DBG_FSM_WRITEWAIT1 0x7
+#define HC_DBG_FSM_POWERDOWN 0x8
+#define HC_DBG_FSM_POWERUP 0x9
+#define HC_DBG_FSM_WRITESTART1 0xa
+#define HC_DBG_FSM_WRITESTART2 0xb
+#define HC_DBG_FSM_GENPULSES 0xc
+#define HC_DBG_FSM_WRITEWAIT2 0xd
+#define HC_DBG_FSM_STARTPOWDOWN 0xf
+#define HC_DBG_FORCE_DATA_MODE 0x40000
+
+/* Settings */
+#define HC_FIFO_SIZE 16
+#define HC_FIFO_THRESH_READ 4
+#define HC_FIFO_THRESH_WRITE 4
+
+#define HC_TIMEOUT_DEFAULT 0x00f00000
+#define HC_TIMEOUT_IDLE 0x00a00000
+
+#endif /* RPI3_SDHOST_H */