mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-27 15:12:21 +00:00
d7bd29c912
Pass a device to functions which log with one. Signed-off-by: Sean Anderson <seanga2@gmail.com> Tested-by: Patrick Delaunay <patrick.delaunay@st.com>
326 lines
8.2 KiB
C
326 lines
8.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Texas Instruments' K3 System Controller Driver
|
|
*
|
|
* Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
|
|
* Lokesh Vutla <lokeshvutla@ti.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <remoteproc.h>
|
|
#include <errno.h>
|
|
#include <mailbox.h>
|
|
#include <dm/device_compat.h>
|
|
#include <linux/soc/ti/k3-sec-proxy.h>
|
|
|
|
#define K3_MSG_R5_TO_M3_M3FW 0x8105
|
|
#define K3_MSG_M3_TO_R5_CERT_RESULT 0x8805
|
|
#define K3_MSG_M3_TO_R5_BOOT_NOTIFICATION 0x000A
|
|
|
|
#define K3_FLAGS_MSG_CERT_AUTH_PASS 0x555555
|
|
#define K3_FLAGS_MSG_CERT_AUTH_FAIL 0xffffff
|
|
|
|
/**
|
|
* struct k3_sysctrler_msg_hdr - Generic Header for Messages and responses.
|
|
* @cmd_id: Message ID. One of K3_MSG_*
|
|
* @host_id: Host ID of the message
|
|
* @seq_ne: Message identifier indicating a transfer sequence.
|
|
* @flags: Flags for the message.
|
|
*/
|
|
struct k3_sysctrler_msg_hdr {
|
|
u16 cmd_id;
|
|
u8 host_id;
|
|
u8 seq_nr;
|
|
u32 flags;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct k3_sysctrler_load_msg - Message format for Firmware loading
|
|
* @hdr: Generic message hdr
|
|
* @buffer_address: Address at which firmware is located.
|
|
* @buffer_size: Size of the firmware.
|
|
*/
|
|
struct k3_sysctrler_load_msg {
|
|
struct k3_sysctrler_msg_hdr hdr;
|
|
u32 buffer_address;
|
|
u32 buffer_size;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct k3_sysctrler_boot_notification_msg - Message format for boot
|
|
* notification
|
|
* @checksum: Checksum for the entire message
|
|
* @reserved: Reserved for future use.
|
|
* @hdr: Generic message hdr
|
|
*/
|
|
struct k3_sysctrler_boot_notification_msg {
|
|
u16 checksum;
|
|
u16 reserved;
|
|
struct k3_sysctrler_msg_hdr hdr;
|
|
} __packed;
|
|
|
|
/**
|
|
* struct k3_sysctrler_desc - Description of SoC integration.
|
|
* @host_id: Host identifier representing the compute entity
|
|
* @max_rx_timeout_ms: Timeout for communication with SoC (in Milliseconds)
|
|
* @max_msg_size: Maximum size of data per message that can be handled.
|
|
*/
|
|
struct k3_sysctrler_desc {
|
|
u8 host_id;
|
|
int max_rx_timeout_us;
|
|
int max_msg_size;
|
|
};
|
|
|
|
/**
|
|
* struct k3_sysctrler_privdata - Structure representing System Controller data.
|
|
* @chan_tx: Transmit mailbox channel
|
|
* @chan_rx: Receive mailbox channel
|
|
* @desc: SoC description for this instance
|
|
* @seq_nr: Counter for number of messages sent.
|
|
*/
|
|
struct k3_sysctrler_privdata {
|
|
struct mbox_chan chan_tx;
|
|
struct mbox_chan chan_rx;
|
|
struct k3_sysctrler_desc *desc;
|
|
u32 seq_nr;
|
|
};
|
|
|
|
static inline
|
|
void k3_sysctrler_load_msg_setup(struct k3_sysctrler_load_msg *fw,
|
|
struct k3_sysctrler_privdata *priv,
|
|
ulong addr, ulong size)
|
|
{
|
|
fw->hdr.cmd_id = K3_MSG_R5_TO_M3_M3FW;
|
|
fw->hdr.host_id = priv->desc->host_id;
|
|
fw->hdr.seq_nr = priv->seq_nr++;
|
|
fw->hdr.flags = 0x0;
|
|
fw->buffer_address = addr;
|
|
fw->buffer_size = size;
|
|
}
|
|
|
|
static int k3_sysctrler_load_response(struct udevice *dev, u32 *buf)
|
|
{
|
|
struct k3_sysctrler_load_msg *fw;
|
|
|
|
fw = (struct k3_sysctrler_load_msg *)buf;
|
|
|
|
/* Check for proper response ID */
|
|
if (fw->hdr.cmd_id != K3_MSG_M3_TO_R5_CERT_RESULT) {
|
|
dev_err(dev, "%s: Command expected 0x%x, but received 0x%x\n",
|
|
__func__, K3_MSG_M3_TO_R5_CERT_RESULT, fw->hdr.cmd_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Check for certificate authentication result */
|
|
if (fw->hdr.flags == K3_FLAGS_MSG_CERT_AUTH_FAIL) {
|
|
dev_err(dev, "%s: Firmware certificate authentication failed\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
} else if (fw->hdr.flags != K3_FLAGS_MSG_CERT_AUTH_PASS) {
|
|
dev_err(dev, "%s: Firmware Load response Invalid %d\n",
|
|
__func__, fw->hdr.flags);
|
|
return -EINVAL;
|
|
}
|
|
|
|
debug("%s: Firmware authentication passed\n", __func__);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int k3_sysctrler_boot_notification_response(struct udevice *dev,
|
|
u32 *buf)
|
|
{
|
|
struct k3_sysctrler_boot_notification_msg *boot;
|
|
|
|
boot = (struct k3_sysctrler_boot_notification_msg *)buf;
|
|
|
|
/* ToDo: Verify checksum */
|
|
|
|
/* Check for proper response ID */
|
|
if (boot->hdr.cmd_id != K3_MSG_M3_TO_R5_BOOT_NOTIFICATION) {
|
|
dev_err(dev, "%s: Command expected 0x%x, but received 0x%x\n",
|
|
__func__, K3_MSG_M3_TO_R5_BOOT_NOTIFICATION,
|
|
boot->hdr.cmd_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
debug("%s: Boot notification received\n", __func__);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* k3_sysctrler_load() - Loadup the K3 remote processor
|
|
* @dev: corresponding K3 remote processor device
|
|
* @addr: Address in memory where image binary is stored
|
|
* @size: Size in bytes of the image binary
|
|
*
|
|
* Return: 0 if all goes good, else appropriate error message.
|
|
*/
|
|
static int k3_sysctrler_load(struct udevice *dev, ulong addr, ulong size)
|
|
{
|
|
struct k3_sysctrler_privdata *priv = dev_get_priv(dev);
|
|
struct k3_sysctrler_load_msg firmware;
|
|
struct k3_sec_proxy_msg msg;
|
|
int ret;
|
|
|
|
debug("%s: Loading binary from 0x%08lX, size 0x%08lX\n",
|
|
__func__, addr, size);
|
|
|
|
memset(&firmware, 0, sizeof(firmware));
|
|
memset(&msg, 0, sizeof(msg));
|
|
|
|
/* Setup the message */
|
|
k3_sysctrler_load_msg_setup(&firmware, priv, addr, size);
|
|
msg.len = sizeof(firmware);
|
|
msg.buf = (u32 *)&firmware;
|
|
|
|
/* Send the message */
|
|
ret = mbox_send(&priv->chan_tx, &msg);
|
|
if (ret) {
|
|
dev_err(dev, "%s: Firmware Loading failed. ret = %d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Receive the response */
|
|
ret = mbox_recv(&priv->chan_rx, &msg, priv->desc->max_rx_timeout_us);
|
|
if (ret) {
|
|
dev_err(dev, "%s: Firmware Load response failed. ret = %d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Process the response */
|
|
ret = k3_sysctrler_load_response(dev, msg.buf);
|
|
if (ret)
|
|
return ret;
|
|
|
|
debug("%s: Firmware Loaded successfully on dev %s\n",
|
|
__func__, dev->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* k3_sysctrler_start() - Start the remote processor
|
|
* Note that while technically the K3 system controller starts up
|
|
* automatically after its firmware got loaded we still want to
|
|
* utilize the rproc start operation for other startup-related
|
|
* tasks.
|
|
* @dev: device to operate upon
|
|
*
|
|
* Return: 0 if all went ok, else return appropriate error
|
|
*/
|
|
static int k3_sysctrler_start(struct udevice *dev)
|
|
{
|
|
struct k3_sysctrler_privdata *priv = dev_get_priv(dev);
|
|
struct k3_sec_proxy_msg msg;
|
|
int ret;
|
|
|
|
debug("%s(dev=%p)\n", __func__, dev);
|
|
|
|
/* Receive the boot notification. Note that it is sent only once. */
|
|
ret = mbox_recv(&priv->chan_rx, &msg, priv->desc->max_rx_timeout_us);
|
|
if (ret) {
|
|
dev_err(dev, "%s: Boot Notification response failed. ret = %d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Process the response */
|
|
ret = k3_sysctrler_boot_notification_response(dev, msg.buf);
|
|
if (ret)
|
|
return ret;
|
|
|
|
debug("%s: Boot notification received successfully on dev %s\n",
|
|
__func__, dev->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dm_rproc_ops k3_sysctrler_ops = {
|
|
.load = k3_sysctrler_load,
|
|
.start = k3_sysctrler_start,
|
|
};
|
|
|
|
/**
|
|
* k3_of_to_priv() - generate private data from device tree
|
|
* @dev: corresponding k3 remote processor device
|
|
* @priv: pointer to driver specific private data
|
|
*
|
|
* Return: 0 if all goes good, else appropriate error message.
|
|
*/
|
|
static int k3_of_to_priv(struct udevice *dev,
|
|
struct k3_sysctrler_privdata *priv)
|
|
{
|
|
int ret;
|
|
|
|
ret = mbox_get_by_name(dev, "tx", &priv->chan_tx);
|
|
if (ret) {
|
|
dev_err(dev, "%s: Acquiring Tx channel failed. ret = %d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = mbox_get_by_name(dev, "rx", &priv->chan_rx);
|
|
if (ret) {
|
|
dev_err(dev, "%s: Acquiring Rx channel failed. ret = %d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* k3_sysctrler_probe() - Basic probe
|
|
* @dev: corresponding k3 remote processor device
|
|
*
|
|
* Return: 0 if all goes good, else appropriate error message.
|
|
*/
|
|
static int k3_sysctrler_probe(struct udevice *dev)
|
|
{
|
|
struct k3_sysctrler_privdata *priv;
|
|
int ret;
|
|
|
|
debug("%s(dev=%p)\n", __func__, dev);
|
|
|
|
priv = dev_get_priv(dev);
|
|
|
|
ret = k3_of_to_priv(dev, priv);
|
|
if (ret) {
|
|
dev_err(dev, "%s: Probe failed with error %d\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
priv->desc = (void *)dev_get_driver_data(dev);
|
|
priv->seq_nr = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct k3_sysctrler_desc k3_sysctrler_am654_desc = {
|
|
.host_id = 4, /* HOST_ID_R5_1 */
|
|
.max_rx_timeout_us = 800000,
|
|
.max_msg_size = 60,
|
|
};
|
|
|
|
static const struct udevice_id k3_sysctrler_ids[] = {
|
|
{
|
|
.compatible = "ti,am654-system-controller",
|
|
.data = (ulong)&k3_sysctrler_am654_desc,
|
|
},
|
|
{}
|
|
};
|
|
|
|
U_BOOT_DRIVER(k3_sysctrler) = {
|
|
.name = "k3_system_controller",
|
|
.of_match = k3_sysctrler_ids,
|
|
.id = UCLASS_REMOTEPROC,
|
|
.ops = &k3_sysctrler_ops,
|
|
.probe = k3_sysctrler_probe,
|
|
.priv_auto_alloc_size = sizeof(struct k3_sysctrler_privdata),
|
|
};
|