* This file is part of the coreboot project.
*
* Copyright (C) 2006 Eric Biederman (ebiederm@xmission.com)
+ * Copyright (C) 2007 AMD
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
-#if !defined(__ROMCC__)
+#include <stddef.h>
#include <console/console.h>
-#else
-#if CONFIG_CACHE_AS_RAM==0
-#define printk(BIOS_DEBUG, fmt, arg...) do {} while(0)
-#endif
-#endif
-
#include <arch/io.h>
+#include <arch/byteorder.h>
#include <usb_ch9.h>
#include <ehci.h>
#include <usbdebug.h>
+// Does not work if we want early printk to do usb debug, too..
+#define DBGP_DEBUG 0
+#if DBGP_DEBUG
+# define dbgp_printk(fmt_arg...) printk(BIOS_DEBUG, fmt_arg)
+#else
+#define dbgp_printk(fmt_arg...) do {} while(0)
+#endif
+
+
#define USB_DEBUG_DEVNUM 127
#define DBGP_DATA_TOGGLE 0x8800
static int dbgp_wait_until_complete(struct ehci_dbg_port *ehci_debug)
{
- unsigned ctrl;
+ u32 ctrl;
int loop = 0x100000;
+
do {
ctrl = read32((unsigned long)&ehci_debug->control);
/* Stop when the transaction is finished */
if (ctrl & DBGP_DONE)
break;
- } while(--loop>0);
+ } while (--loop > 0);
- if (!loop) return -1000;
+ if (!loop)
+ return -1;
/* Now that we have observed the completed transaction,
* clear the done bit.
return (ctrl & DBGP_ERROR) ? -DBGP_ERRCODE(ctrl) : DBGP_LEN(ctrl);
}
-static void dbgp_mdelay(int ms)
-{
- int i;
- while (ms--) {
- for (i = 0; i < 1000; i++)
- inb(0x80);
- }
-}
-
static void dbgp_breath(void)
{
/* Sleep to give the debug port a chance to breathe */
static int dbgp_wait_until_done(struct ehci_dbg_port *ehci_debug, unsigned ctrl)
{
- unsigned pids, lpid;
+ u32 pids, lpid;
int ret;
-
int loop = 3;
+
retry:
write32((unsigned long)&ehci_debug->control, ctrl | DBGP_GO);
ret = dbgp_wait_until_complete(ehci_debug);
/* If I get a NACK reissue the transmission */
if (lpid == USB_PID_NAK) {
- if (--loop > 0) goto retry;
+ if (--loop > 0)
+ goto retry;
}
return ret;
static void dbgp_set_data(struct ehci_dbg_port *ehci_debug, const void *buf, int size)
{
const unsigned char *bytes = buf;
- unsigned lo, hi;
+ u32 lo, hi;
int i;
+
lo = hi = 0;
for (i = 0; i < 4 && i < size; i++)
lo |= bytes[i] << (8*i);
static void dbgp_get_data(struct ehci_dbg_port *ehci_debug, void *buf, int size)
{
unsigned char *bytes = buf;
- unsigned lo, hi;
+ u32 lo, hi;
int i;
+
lo = read32((unsigned long)&ehci_debug->data03);
hi = read32((unsigned long)&ehci_debug->data47);
for (i = 0; i < 4 && i < size; i++)
bytes[i] = (hi >> (8*(i - 4))) & 0xff;
}
-static int dbgp_bulk_write(struct ehci_dbg_port *ehci_debug, unsigned devnum, unsigned endpoint, const char *bytes, int size)
+static int dbgp_bulk_write(struct ehci_dbg_port *ehci_debug,
+ unsigned devnum, unsigned endpoint, const char *bytes, int size)
{
- unsigned pids, addr, ctrl;
+ u32 pids, addr, ctrl;
int ret;
+
if (size > DBGP_MAX_PACKET)
return -1;
write32((unsigned long)&ehci_debug->pids, pids);
ret = dbgp_wait_until_done(ehci_debug, ctrl);
- if (ret < 0) {
- return ret;
- }
+
return ret;
}
int dbgp_bulk_write_x(struct ehci_debug_info *dbg_info, const char *bytes, int size)
{
- return dbgp_bulk_write(dbg_info->ehci_debug, dbg_info->devnum, dbg_info->endpoint_out, bytes, size);
+ return dbgp_bulk_write(dbg_info->ehci_debug, dbg_info->devnum,
+ dbg_info->endpoint_out, bytes, size);
}
-static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, unsigned devnum, unsigned endpoint, void *data, int size)
+static int dbgp_bulk_read(struct ehci_dbg_port *ehci_debug, unsigned devnum,
+ unsigned endpoint, void *data, int size)
{
- unsigned pids, addr, ctrl;
+ u32 pids, addr, ctrl;
int ret;
if (size > DBGP_MAX_PACKET)
ret = dbgp_wait_until_done(ehci_debug, ctrl);
if (ret < 0)
return ret;
+
if (size > ret)
size = ret;
dbgp_get_data(ehci_debug, data, size);
return ret;
}
+
int dbgp_bulk_read_x(struct ehci_debug_info *dbg_info, void *data, int size)
{
- return dbgp_bulk_read(dbg_info->ehci_debug, dbg_info->devnum, dbg_info->endpoint_in, data, size);
+ return dbgp_bulk_read(dbg_info->ehci_debug, dbg_info->devnum,
+ dbg_info->endpoint_in, data, size);
+}
+
+#ifdef __PRE_RAM__
+static void dbgp_mdelay(int ms)
+{
+ int i;
+
+ while (ms--) {
+ for (i = 0; i < 1000; i++)
+ inb(0x80);
+ }
}
-int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned devnum, int requesttype, int request,
- int value, int index, void *data, int size)
+static int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned devnum, int requesttype,
+ int request, int value, int index, void *data, int size)
{
- unsigned pids, addr, ctrl;
+ u32 pids, addr, ctrl;
struct usb_ctrlrequest req;
int read;
int ret;
read = (requesttype & USB_DIR_IN) != 0;
- if (size > (read?DBGP_MAX_PACKET:0))
+ if (size > (read ? DBGP_MAX_PACKET:0))
return -1;
/* Compute the control message */
req.bRequestType = requesttype;
req.bRequest = request;
- req.wValue = value;
- req.wIndex = index;
- req.wLength = size;
+ req.wValue = cpu_to_le16(value);
+ req.wIndex = cpu_to_le16(index);
+ req.wLength = cpu_to_le16(size);
pids = DBGP_PID_SET(USB_PID_DATA0, USB_PID_SETUP);
addr = DBGP_EPADDR(devnum, 0);
static int ehci_reset_port(struct ehci_regs *ehci_regs, int port)
{
- unsigned portsc;
- unsigned delay_time, delay_ms;
+ u32 portsc;
+ u32 delay_time, delay_ms;
int loop;
/* Reset the usb debug port */
/* Device went away? */
if (!(portsc & PORT_CONNECT))
- return -107;//-ENOTCONN;
+ return -1; //-ENOTCONN;
/* bomb out completely if something weird happend */
if ((portsc & PORT_CSC))
- return -22;//-EINVAL;
+ return -2; //-EINVAL;
/* If we've finished resetting, then break out of the loop */
if (!(portsc & PORT_RESET) && (portsc & PORT_PE))
return 0;
}
- return -16;//-EBUSY;
+ return -3; //-EBUSY;
}
-int ehci_wait_for_port(struct ehci_regs *ehci_regs, int port)
+static int ehci_wait_for_port(struct ehci_regs *ehci_regs, int port)
{
- unsigned status;
+ u32 status;
int ret, reps;
+
for (reps = 0; reps < 3; reps++) {
dbgp_mdelay(100);
status = read32((unsigned long)&ehci_regs->status);
return 0;
}
}
- return -107; //-ENOTCONN;
+ return -1; //-ENOTCONN;
}
-#define DBGP_DEBUG 1
-#if DBGP_DEBUG
-# define dbgp_printk(fmt_arg...) printk(BIOS_DEBUG, fmt_arg)
-#else
-#define dbgp_printk(fmt_arg...) do {} while(0)
-#endif
-
-#ifdef __PRE_RAM__
-static void usbdebug_init(unsigned ehci_bar, unsigned offset, struct ehci_debug_info *info)
+static int usbdebug_init(unsigned ehci_bar, unsigned offset, struct ehci_debug_info *info)
{
struct ehci_caps *ehci_caps;
struct ehci_regs *ehci_regs;
struct ehci_dbg_port *ehci_debug;
unsigned dbgp_endpoint_out;
unsigned dbgp_endpoint_in;
+
struct usb_debug_descriptor dbgp_desc;
- unsigned ctrl, devnum;
- int ret;
+ u32 cmd, ctrl, status, portsc, hcs_params;
+ u32 debug_port, new_debug_port = 0, n_ports;
+ u32 devnum;
+ int ret, i;
int loop;
-
- unsigned cmd, status, portsc, hcs_params, debug_port, n_ports, new_debug_port;
- int i;
- unsigned port_map_tried;
-
- unsigned playtimes = 3;
+ int port_map_tried;
+ int playtimes = 3;
ehci_caps = (struct ehci_caps *)ehci_bar;
- ehci_regs = (struct ehci_regs *)(ehci_bar + HC_LENGTH(read32((unsigned long)&ehci_caps->hc_capbase)));
+ ehci_regs = (struct ehci_regs *)(ehci_bar +
+ HC_LENGTH(read32((unsigned long)&ehci_caps->hc_capbase)));
ehci_debug = (struct ehci_dbg_port *)(ehci_bar + offset);
-
info->ehci_debug = (void *)0;
- new_debug_port = 0;
-
try_next_time:
port_map_tried = 0;
dbgp_printk("debug_port: %d\n", debug_port);
dbgp_printk("n_ports: %d\n", n_ports);
-#if 1
for (i = 1; i <= n_ports; i++) {
portsc = read32((unsigned long)&ehci_regs->port_status[i-1]);
dbgp_printk("PORTSC #%d: %08x\n", i, portsc);
}
-#endif
- if(port_map_tried && (new_debug_port!=debug_port)) {
+ if(port_map_tried && (new_debug_port != debug_port)) {
if(--playtimes) {
set_debug_port(debug_port);
goto try_next_time;
}
- return;
+ return -1;
}
+ loop = 100;
/* Reset the EHCI controller */
- loop = 10;
cmd = read32((unsigned long)&ehci_regs->command);
cmd |= CMD_RESET;
write32((unsigned long)&ehci_regs->command, cmd);
do {
+ dbgp_mdelay(10);
cmd = read32((unsigned long)&ehci_regs->command);
} while ((cmd & CMD_RESET) && (--loop > 0));
- if(!loop)
+ if(!loop) {
dbgp_printk("Could not reset EHCI controller.\n");
- else
+ // on some systems it works without succeeding here.
+ // return -2;
+ } else {
dbgp_printk("EHCI controller reset successfully.\n");
+ }
/* Claim ownership, but do not enable yet */
ctrl = read32((unsigned long)&ehci_debug->control);
ctrl &= ~(DBGP_ENABLED | DBGP_INUSE);
write32((unsigned long)&ehci_debug->control, ctrl);
- /* Start the ehci running */
+ /* Start EHCI controller */
cmd = read32((unsigned long)&ehci_regs->command);
cmd &= ~(CMD_LRESET | CMD_IAAD | CMD_PSE | CMD_ASE | CMD_RESET);
cmd |= CMD_RUN;
/* Wait until the controller is no longer halted */
loop = 10;
do {
+ dbgp_mdelay(10);
status = read32((unsigned long)&ehci_regs->status);
- } while ((status & STS_HALT) && (--loop>0));
+ } while ((status & STS_HALT) && (--loop > 0));
if(!loop) {
dbgp_printk("EHCI could not be started.\n");
- return;
+ return -3;
}
dbgp_printk("EHCI started.\n");
if ((ctrl & DBGP_CLAIM) != DBGP_CLAIM) {
dbgp_printk("No device in EHCI debug port.\n");
write32((unsigned long)&ehci_debug->control, ctrl & ~DBGP_CLAIM);
+ ret = -4;
goto err;
}
dbgp_printk("EHCI debug port enabled.\n");
}
if (devnum > 127) {
dbgp_printk("Could not find attached debug device.\n");
+ ret = -5;
goto err;
}
if (ret < 0) {
dbgp_printk("Attached device is not a debug device.\n");
+ ret = -6;
goto err;
}
dbgp_endpoint_out = dbgp_desc.bDebugOutEndpoint;
if (devnum != USB_DEBUG_DEVNUM) {
ret = dbgp_control_msg(ehci_debug, devnum,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
- USB_REQ_SET_ADDRESS, USB_DEBUG_DEVNUM, 0, (void *)0, 0);
+ USB_REQ_SET_ADDRESS, USB_DEBUG_DEVNUM, 0, NULL, 0);
if (ret < 0) {
dbgp_printk("Could not move attached device to %d.\n",
USB_DEBUG_DEVNUM);
+ ret = -7;
goto err;
}
devnum = USB_DEBUG_DEVNUM;
/* Enable the debug interface */
ret = dbgp_control_msg(ehci_debug, USB_DEBUG_DEVNUM,
USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
- USB_REQ_SET_FEATURE, USB_DEVICE_DEBUG_MODE, 0, (void *)0, 0);
+ USB_REQ_SET_FEATURE, USB_DEVICE_DEBUG_MODE, 0, NULL, 0);
if (ret < 0) {
dbgp_printk("Could not enable EHCI debug device.\n");
+ ret = -8;
goto err;
}
dbgp_printk("EHCI debug interface enabled.\n");
- /* Perform a small write to get the even/odd data state in sync
- */
- ret = dbgp_bulk_write(ehci_debug, USB_DEBUG_DEVNUM, dbgp_endpoint_out, " ",1);
+ /* Perform a small write to get the even/odd data state in sync */
+ ret = dbgp_bulk_write(ehci_debug, USB_DEBUG_DEVNUM, dbgp_endpoint_out, "USB\r\n",5);
if (ret < 0) {
dbgp_printk("dbgp_bulk_write failed: %d\n", ret);
+ ret = -9;
goto err;
}
dbgp_printk("Test write done\n");
info->endpoint_out = dbgp_endpoint_out;
info->endpoint_in = dbgp_endpoint_in;
- return;
+ return 0;
err:
/* Things didn't work so remove my claim */
ctrl = read32((unsigned long)&ehci_debug->control);
ctrl &= ~(DBGP_CLAIM | DBGP_OUT);
write32((unsigned long)(unsigned long)&ehci_debug->control, ctrl);
+ //return ret;
next_debug_port:
- port_map_tried |= (1<<(debug_port-1));
- if(port_map_tried != ((1<<n_ports) -1)) {
- new_debug_port = ((debug_port-1+1)%n_ports) + 1;
+ port_map_tried |= (1 << (debug_port - 1));
+ new_debug_port = ((debug_port-1 + 1) % n_ports) + 1;
+ if (port_map_tried != ((1 << n_ports) - 1)) {
set_debug_port(new_debug_port);
goto try_next_port;
}
- if(--playtimes) {
+ if (--playtimes) {
+ //set_debug_port(new_debug_port);
set_debug_port(debug_port);
goto try_next_time;
}
+ return -10;
}
-#endif
+// **** This part is probably x86 specific and used by romstage.c **** //
+int early_usbdebug_init(void)
+{
+ struct ehci_debug_info *dbg_info = (struct ehci_debug_info *)
+ (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info));
+
+ return usbdebug_init(CONFIG_EHCI_BAR, CONFIG_EHCI_DEBUG_OFFSET, dbg_info);
+}
+
+void usbdebug_tx_byte(unsigned char data)
+{
+ struct ehci_debug_info *dbg_info;
+
+ /* "Find" dbg_info structure in Cache */
+ dbg_info = (struct ehci_debug_info *)
+ (CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE - sizeof(struct ehci_debug_info));
+
+ if (dbg_info->ehci_debug) {
+ dbgp_bulk_write_x(dbg_info, (char*)&data, 1);
+ }
+}
+#endif
projects / coreboot.git / commitdiff