diff options
Diffstat (limited to 'include/drivers/rpi3')
| -rw-r--r-- | include/drivers/rpi3/gpio/rpi3_gpio.h | 34 | ||||
| -rw-r--r-- | include/drivers/rpi3/mailbox/rpi3_mbox.h | 39 | ||||
| -rw-r--r-- | include/drivers/rpi3/rng/rpi3_rng.h | 12 | ||||
| -rw-r--r-- | include/drivers/rpi3/sdhost/rpi3_sdhost.h | 126 |
4 files changed, 211 insertions, 0 deletions
diff --git a/include/drivers/rpi3/gpio/rpi3_gpio.h b/include/drivers/rpi3/gpio/rpi3_gpio.h new file mode 100644 index 0000000..7bb3ee2 --- /dev/null +++ b/include/drivers/rpi3/gpio/rpi3_gpio.h @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2019, Linaro Limited + * Copyright (c) 2019, Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org> + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef RPI3_GPIO_H +#define RPI3_GPIO_H + +#include <stdint.h> +#include <drivers/gpio.h> + +void rpi3_gpio_init(void); +int rpi3_gpio_get_select(int gpio); +void rpi3_gpio_set_select(int gpio, int fsel); + +#define RPI3_GPIO_GPFSEL(n) ((n) * U(0x04)) +#define RPI3_GPIO_GPSET(n) (((n) * U(0x04)) + U(0x1C)) +#define RPI3_GPIO_GPCLR(n) (((n) * U(0x04)) + U(0x28)) +#define RPI3_GPIO_GPLEV(n) (((n) * U(0x04)) + U(0x34)) +#define RPI3_GPIO_GPPUD U(0x94) +#define RPI3_GPIO_GPPUDCLK(n) (((n) * U(0x04)) + U(0x98)) + +#define RPI3_GPIO_FUNC_INPUT U(0) +#define RPI3_GPIO_FUNC_OUTPUT U(1) +#define RPI3_GPIO_FUNC_ALT0 U(4) +#define RPI3_GPIO_FUNC_ALT1 U(5) +#define RPI3_GPIO_FUNC_ALT2 U(6) +#define RPI3_GPIO_FUNC_ALT3 U(7) +#define RPI3_GPIO_FUNC_ALT4 U(3) +#define RPI3_GPIO_FUNC_ALT5 U(2) + +#endif /* RPI3_GPIO_H */ diff --git a/include/drivers/rpi3/mailbox/rpi3_mbox.h b/include/drivers/rpi3/mailbox/rpi3_mbox.h new file mode 100644 index 0000000..c107440 --- /dev/null +++ b/include/drivers/rpi3/mailbox/rpi3_mbox.h @@ -0,0 +1,39 @@ +/* + * Copyright (c) 2019, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef RPI3_MBOX_H +#define RPI3_MBOX_H + +#include <stdint.h> + +/* This struct must be aligned to 16 bytes */ +typedef struct __packed __aligned(16) rpi3_mbox_request { + uint32_t size; /* Buffer size in bytes */ + uint32_t code; /* Request/response code */ + uint32_t tags[0]; +} rpi3_mbox_request_t; + +#define RPI3_MBOX_BUFFER_SIZE U(256) + +/* Constants to perform a request/check the status of a request. */ +#define RPI3_MBOX_PROCESS_REQUEST U(0x00000000) +#define RPI3_MBOX_REQUEST_SUCCESSFUL U(0x80000000) +#define RPI3_MBOX_REQUEST_ERROR U(0x80000001) + +/* Command constants */ +#define RPI3_TAG_HARDWARE_GET_BOARD_REVISION U(0x00010002) +#define RPI3_TAG_END U(0x00000000) + +#define RPI3_TAG_REQUEST U(0x00000000) +#define RPI3_TAG_IS_RESPONSE U(0x80000000) /* Set if response */ +#define RPI3_TAG_RESPONSE_LENGTH_MASK U(0x7FFFFFFF) + +#define RPI3_CHANNEL_ARM_TO_VC U(0x8) +#define RPI3_CHANNEL_MASK U(0xF) + +void rpi3_vc_mailbox_request_send(rpi3_mbox_request_t *req, int req_size); + +#endif diff --git a/include/drivers/rpi3/rng/rpi3_rng.h b/include/drivers/rpi3/rng/rpi3_rng.h new file mode 100644 index 0000000..ea5a677 --- /dev/null +++ b/include/drivers/rpi3/rng/rpi3_rng.h @@ -0,0 +1,12 @@ +/* + * Copyright (c) 2019, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef RPI3_RNG_H +#define RPI3_RNG_H + +void rpi3_rng_read(void *buf, size_t len); + +#endif diff --git a/include/drivers/rpi3/sdhost/rpi3_sdhost.h b/include/drivers/rpi3/sdhost/rpi3_sdhost.h new file mode 100644 index 0000000..f4f6ec8 --- /dev/null +++ b/include/drivers/rpi3/sdhost/rpi3_sdhost.h @@ -0,0 +1,126 @@ +/* + * 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 clk_rate_initial; + 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 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 RPI3_SDHOST_MAX_CLOCK 250000000 // technically, we should obtain this number from the mailbox + +#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 */ |