Author: stepan Date: Fri Jan 28 09:05:54 2011 New Revision: 6315 URL: https://tracker.coreboot.org/trac/coreboot/changeset/6315
Log: This patch gets usbdebug console working in romstage. - actually hook up usbdebug in printk/print_ for romstage - make usbdebug.c more similar to the Linux kernel version it was originally derived from. - increase retries and timing for usbdebug init (at least one chipset seems to need this) - src/pc80/usbdebug_serial.c is not needed - some small console cleanups
Signed-off-by: Stefan Reinauer reinauer@google.com Acked-by: Patrick Georgi patrick.georgi@secunet.com
Deleted: trunk/src/pc80/usbdebug_serial.c Modified: trunk/src/arch/x86/lib/printk_init.c trunk/src/include/console/console.h trunk/src/include/usbdebug.h trunk/src/lib/Makefile.inc trunk/src/lib/usbdebug.c trunk/src/pc80/Makefile.inc
Modified: trunk/src/arch/x86/lib/printk_init.c ============================================================================== --- trunk/src/arch/x86/lib/printk_init.c Fri Jan 28 08:56:39 2011 (r6314) +++ trunk/src/arch/x86/lib/printk_init.c Fri Jan 28 09:05:54 2011 (r6315) @@ -19,23 +19,30 @@
#include <console/console.h> #include <console/vtxprintf.h> +#if CONFIG_CONSOLE_SERIAL8250 #include <uart8250.h> - +#endif +#if CONFIG_USBDEBUG +#include <usbdebug.h> +#endif #if CONFIG_CONSOLE_NE2K #include <console/ne2k.h> #endif
static void console_tx_byte(unsigned char byte) { -#if CONFIG_CONSOLE_NE2K -#ifdef __PRE_RAM__ - ne2k_append_data(&byte, 1, CONFIG_CONSOLE_NE2K_IO_PORT); -#endif -#endif if (byte == '\n') - uart8250_tx_byte(CONFIG_TTYS0_BASE, '\r'); + console_tx_byte('\r');
+#if CONFIG_CONSOLE_SERIAL8250 uart8250_tx_byte(CONFIG_TTYS0_BASE, byte); +#endif +#if CONFIG_USBDEBUG + usbdebug_tx_byte(byte); +#endif +#if CONFIG_CONSOLE_NE2K + ne2k_append_data(&byte, 1, CONFIG_CONSOLE_NE2K_IO_PORT); +#endif }
int do_printk(int msg_level, const char *fmt, ...)
Modified: trunk/src/include/console/console.h ============================================================================== --- trunk/src/include/console/console.h Fri Jan 28 08:56:39 2011 (r6314) +++ trunk/src/include/console/console.h Fri Jan 28 09:05:54 2011 (r6315) @@ -149,6 +149,7 @@ #define print_info_hex32(HEX) printk(BIOS_INFO, "%08x", (HEX)) #define print_debug_hex32(HEX) printk(BIOS_DEBUG, "%08x", (HEX)) #define print_spew_hex32(HEX) printk(BIOS_SPEW, "%08x", (HEX)) + #else
/* __ROMCC__ */ @@ -357,9 +358,6 @@ #define print_spew_hex32(HEX) __console_tx_hex32(BIOS_SPEW, HEX) #endif
-#endif - -#ifdef __ROMCC__ /* if included by romcc, include the sources, too. romcc can't use prototypes */ #include <console/console.c> #include <console/post.c>
Modified: trunk/src/include/usbdebug.h ============================================================================== --- trunk/src/include/usbdebug.h Fri Jan 28 08:56:39 2011 (r6314) +++ trunk/src/include/usbdebug.h Fri Jan 28 09:05:54 2011 (r6315) @@ -27,22 +27,18 @@ void *ehci_caps; void *ehci_regs; void *ehci_debug; - unsigned devnum; - unsigned endpoint_out; - unsigned endpoint_in; + u32 devnum; + u32 endpoint_out; + u32 endpoint_in; };
int dbgp_bulk_write_x(struct ehci_debug_info *dbg_info, const char *bytes, int size); int dbgp_bulk_read_x(struct ehci_debug_info *dbg_info, void *data, int size); -int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned devnum, int requesttype, int request, - int value, int index, void *data, int size); -int ehci_wait_for_port(struct ehci_regs *ehci_regs, int port); void set_ehci_base(unsigned ehci_base); -void set_ehci_debug(unsigned ehci_deug); +void set_ehci_debug(unsigned ehci_debug); unsigned get_ehci_debug(void); void set_debug_port(unsigned port); -void early_usbdebug_init(void); -void usbdebug_ram_tx_byte(unsigned char data); +int early_usbdebug_init(void); void usbdebug_tx_byte(unsigned char data);
#endif
Modified: trunk/src/lib/Makefile.inc ============================================================================== --- trunk/src/lib/Makefile.inc Fri Jan 28 08:56:39 2011 (r6314) +++ trunk/src/lib/Makefile.inc Fri Jan 28 09:05:54 2011 (r6315) @@ -26,8 +26,10 @@ #romstage-y += lzmadecode.c romstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c romstage-$(CONFIG_CONSOLE_NE2K) += compute_ip_checksum.c + driver-$(CONFIG_CONSOLE_NE2K) += ne2k.c
+romstage-$(CONFIG_USBDEBUG) += usbdebug.c ramstage-$(CONFIG_USBDEBUG) += usbdebug.c
ramstage-$(CONFIG_BOOTSPLASH) += jpeg.c
Modified: trunk/src/lib/usbdebug.c ============================================================================== --- trunk/src/lib/usbdebug.c Fri Jan 28 08:56:39 2011 (r6314) +++ trunk/src/lib/usbdebug.c Fri Jan 28 09:05:54 2011 (r6315) @@ -2,6 +2,7 @@ * 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 @@ -17,20 +18,24 @@ * 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 @@ -78,16 +83,18 @@
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. @@ -96,15 +103,6 @@ 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 */ @@ -112,10 +110,10 @@
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); @@ -133,7 +131,8 @@
/* 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; @@ -142,8 +141,9 @@ 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); @@ -156,8 +156,9 @@ 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++) @@ -166,10 +167,12 @@ 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;
@@ -188,20 +191,20 @@ 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) @@ -222,34 +225,48 @@ 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); @@ -275,8 +292,8 @@
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 */ @@ -308,23 +325,24 @@
/* 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); @@ -334,44 +352,33 @@ 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;
@@ -384,34 +391,36 @@ 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); @@ -419,7 +428,7 @@ 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; @@ -431,12 +440,13 @@ /* 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");
@@ -456,6 +466,7 @@ 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"); @@ -478,10 +489,12 @@ } 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; @@ -491,10 +504,11 @@ 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; @@ -504,18 +518,19 @@ /* 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"); @@ -527,26 +542,50 @@ 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
Modified: trunk/src/pc80/Makefile.inc ============================================================================== --- trunk/src/pc80/Makefile.inc Fri Jan 28 08:56:39 2011 (r6314) +++ trunk/src/pc80/Makefile.inc Fri Jan 28 09:05:54 2011 (r6315) @@ -5,7 +5,6 @@ ramstage-y += keyboard.c
romstage-$(CONFIG_USE_OPTION_TABLE) += mc146818rtc_early.c -romstage-$(CONFIG_USBDEBUG) += usbdebug_serial.c subdirs-y += vga
$(obj)/pc80/mc146818rtc.ramstage.o : $(OPTION_TABLE_H)
-
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