devicetree: Add USB device type

This commit adds support for describing USB ports in devicetree.cb.
It allows a USB port location to be described in the tree with
configuration information, and ACPI code to be generated that
provides this information to the OS.

A new scan_usb_bus() is added that will scan bridges for devices so
a tree of ports and hubs can be created.

The device address is computed with a 'port type' and a 'port id'
which is flexible for SOC to handle depending on their specific USB
setup and allows USB2 and USB3 ports to be described separately.

For example a board may have devices on two ports, one with a USB2
device and one with a USB3 device, both of which are connected to an
xHCI controller with a root hub:

     xHCI
       |
    RootHub
    |     |
USB2[0]  USB3[2]

device pci 14.0 on
  chip drivers/usb/acpi
    register "name" = ""Root Hub""
    device usb 0.0 on
      chip drivers/usb/acpi
        register "name" = ""USB 2.0 Port 0""
        device usb 2.0 on end
      end
      chip drivers/usb/acpi
        register "name" = ""USB 3.0 Port 2""
        device usb 3.2 on end
      end
    end
  end
end

Change-Id: I64e6eba503cdab49be393465b535e139a8c90ef4
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/26169
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 14 insertions, 13 deletions

diff --git a/util/sconfig/sconfig.tab.c_shipped b/util/sconfig/sconfig.tab.c_shipped
index 4c8b8fffc1..1832f35bf3 100644
--- a/util/sconfig/sconfig.tab.c_shipped
+++ b/util/sconfig/sconfig.tab.c_shipped
@@ -151,7 +151,8 @@ extern int yydebug;
     PCIINT = 283,
     GENERIC = 284,
     SPI = 285,
-    MMIO = 286
+    USB = 286,
+    MMIO = 287
   };
 #endif
 
@@ -428,7 +429,7 @@ union yyalloc
 #define YYLAST   39
 
 /* YYNTOKENS -- Number of terminals.  */
-#define YYNTOKENS  32
+#define YYNTOKENS  33
 /* YYNNTS -- Number of nonterminals.  */
 #define YYNNTS  13
 /* YYNRULES -- Number of rules.  */
@@ -439,7 +440,7 @@ union yyalloc
 /* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
    by yylex, with out-of-bounds checking.  */
 #define YYUNDEFTOK  2
-#define YYMAXUTOK   286
+#define YYMAXUTOK   287
 
 #define YYTRANSLATE(YYX)                                                \
   ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
@@ -476,7 +477,7 @@ static const yytype_uint8 yytranslate[] =
        2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
        5,     6,     7,     8,     9,    10,    11,    12,    13,    14,
       15,    16,    17,    18,    19,    20,    21,    22,    23,    24,
-      25,    26,    27,    28,    29,    30,    31
+      25,    26,    27,    28,    29,    30,    31,    32
 };
 
 #if YYDEBUG
@@ -498,7 +499,7 @@ static const char *const yytname[] =
   "BUS", "RESOURCE", "END", "EQUALS", "HEX", "STRING", "PCI", "PNP", "I2C",
   "APIC", "CPU_CLUSTER", "CPU", "DOMAIN", "IRQ", "DRQ", "IO", "NUMBER",
   "SUBSYSTEMID", "INHERIT", "IOAPIC_IRQ", "IOAPIC", "PCIINT", "GENERIC",
-  "SPI", "MMIO", "$accept", "devtree", "$@1", "chipchildren",
+  "SPI", "USB", "MMIO", "$accept", "devtree", "$@1", "chipchildren",
   "devicechildren", "chip", "@2", "device", "@3", "resource", "registers",
   "subsystemid", "ioapic_irq", YY_NULLPTR
 };
@@ -512,7 +513,7 @@ static const yytype_uint16 yytoknum[] =
        0,   256,   257,   258,   259,   260,   261,   262,   263,   264,
      265,   266,   267,   268,   269,   270,   271,   272,   273,   274,
      275,   276,   277,   278,   279,   280,   281,   282,   283,   284,
-     285,   286
+     285,   286,   287
 };
 # endif
 
@@ -586,19 +587,19 @@ static const yytype_int8 yycheck[] =
      symbol of state STATE-NUM.  */
 static const yytype_uint8 yystos[] =
 {
-       0,    33,    34,     0,     3,    37,    12,    38,    35,     4,
-       5,     9,    37,    39,    42,     7,    12,    23,    10,     6,
-      12,    40,    36,     8,     9,    24,    26,    37,    39,    41,
-      43,    44,    23,    23,    23,    10,    23,    28,    23,    25,
+       0,    34,    35,     0,     3,    38,    12,    39,    36,     4,
+       5,     9,    38,    40,    43,     7,    12,    23,    10,     6,
+      12,    41,    37,     8,     9,    24,    26,    38,    40,    42,
+      44,    45,    23,    23,    23,    10,    23,    28,    23,    25,
       23
 };
 
   /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
 static const yytype_uint8 yyr1[] =
 {
-       0,    32,    34,    33,    35,    35,    35,    35,    36,    36,
-      36,    36,    36,    36,    38,    37,    40,    39,    41,    42,
-      43,    43,    44
+       0,    33,    35,    34,    36,    36,    36,    36,    37,    37,
+      37,    37,    37,    37,    39,    38,    41,    40,    42,    43,
+      44,    44,    45
 };
 
   /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN.  */