inteltool: Add option to show differences in GPIO setup

This adds an option -G, --gpio-diffs to inteltool, which shows GPIO settings
that differ from platform defaults. For differing registers, the current,
the default, and an xor of the default and the current value is printed. A
follow-up commit will add defaults for the Cougar/Panther Point platform
controller hubs. If you specify both, -g and -G on the command line, all
GPIO registers will be printed interleaved with the diff.

Here's a preview:

$ ./inteltool -G
CPU: Processor Type: 0, Family 6, Model 3a, Stepping 9
Northbridge: 8086:0150 (unknown)
Southbridge: 8086:1e4a (H77)

========== GPIO DIFFS ===========

GPIOBASE = 0x0500 (IO)

gpiobase+0x0000: 0xb96ba1fb (GPIO_USE_SEL)
gpiobase+0x0000: 0xb96ba1ff (GPIO_USE_SEL) DEFAULT
gpiobase+0x0000: 0x00000004 (GPIO_USE_SEL) DIFF

gpiobase+0x0004: 0x06ff6efb (GP_IO_SEL)
gpiobase+0x0004: 0xeeff6eff (GP_IO_SEL) DEFAULT
gpiobase+0x0004: 0xe8000004 (GP_IO_SEL) DIFF

gpiobase+0x000c: 0xe1f17f7e (GP_LVL)
gpiobase+0x000c: 0x02fe0100 (GP_LVL) DEFAULT
gpiobase+0x000c: 0xe30f7e7e (GP_LVL) DIFF

gpiobase+0x002c: 0x00002000 (GPI_INV)
gpiobase+0x002c: 0x00000000 (GPI_INV) DEFAULT
gpiobase+0x002c: 0x00002000 (GPI_INV) DIFF

gpiobase+0x0030: 0x0aff70ff (GPIO_USE_SEL2)
gpiobase+0x0030: 0x020300ff (GPIO_USE_SEL2) DEFAULT
gpiobase+0x0030: 0x08fc7000 (GPIO_USE_SEL2) DIFF

gpiobase+0x0034: 0x15038ff2 (GP_IO_SEL2)
gpiobase+0x0034: 0x1f57fff4 (GP_IO_SEL2) DEFAULT
gpiobase+0x0034: 0x0a547006 (GP_IO_SEL2) DIFF

gpiobase+0x0038: 0xb65e7f4f (GP_LVL2)
gpiobase+0x0038: 0xa4aa0007 (GP_LVL2) DEFAULT
gpiobase+0x0038: 0x12f47f48 (GP_LVL2) DIFF

gpiobase+0x0040: 0x000001f3 (GPIO_USE_SEL3)
gpiobase+0x0040: 0x00000130 (GPIO_USE_SEL3) DEFAULT
gpiobase+0x0040: 0x000000c3 (GPIO_USE_SEL3) DIFF

gpiobase+0x0044: 0x00000ef3 (GPIO_SEL3)
gpiobase+0x0044: 0x00000ff0 (GPIO_SEL3) DEFAULT
gpiobase+0x0044: 0x00000103 (GPIO_SEL3) DIFF

gpiobase+0x0048: 0x00000dfc (GPIO_LVL3)
gpiobase+0x0048: 0x000000c0 (GPIO_LVL3) DEFAULT
gpiobase+0x0048: 0x00000d3c (GPIO_LVL3) DIFF

gpiobase+0x0060: 0x00000000 (GP_RST_SEL1)
gpiobase+0x0060: 0x01000000 (GP_RST_SEL1) DEFAULT
gpiobase+0x0060: 0x01000000 (GP_RST_SEL1) DIFF

$ ./inteltool -gG
CPU: Processor Type: 0, Family 6, Model 3a, Stepping 9
Northbridge: 8086:0150 (unknown)
Southbridge: 8086:1e4a (H77)

============= GPIOS =============

GPIOBASE = 0x0500 (IO)

gpiobase+0x0000: 0xb96ba1fb (GPIO_USE_SEL)
gpiobase+0x0000: 0xb96ba1ff (GPIO_USE_SEL) DEFAULT
gpiobase+0x0000: 0x00000004 (GPIO_USE_SEL) DIFF
gpiobase+0x0004: 0x06ff6efb (GP_IO_SEL)
gpiobase+0x0004: 0xeeff6eff (GP_IO_SEL) DEFAULT
gpiobase+0x0004: 0xe8000004 (GP_IO_SEL) DIFF
gpiobase+0x0008: 0x00000000 (RESERVED)
gpiobase+0x000c: 0xe1f17f7e (GP_LVL)
gpiobase+0x000c: 0x02fe0100 (GP_LVL) DEFAULT
gpiobase+0x000c: 0xe30f7e7e (GP_LVL) DIFF
gpiobase+0x0010: 0x00000000 (RESERVED)
gpiobase+0x0014: 0x00000000 (RESERVED)
gpiobase+0x0018: 0x00040000 (GPO_BLINK)
gpiobase+0x001c: 0x00000000 (GP_SER_BLINK)
gpiobase+0x0020: 0x00080000 (GP_SB_CMDSTS)
gpiobase+0x0024: 0x00000000 (GP_SB_DATA)
gpiobase+0x0028: 0x0000     (GPI_NMI_EN)
gpiobase+0x002a: 0x0000     (GPI_NMI_STS)
gpiobase+0x002c: 0x00002000 (GPI_INV)
gpiobase+0x002c: 0x00000000 (GPI_INV) DEFAULT
gpiobase+0x002c: 0x00002000 (GPI_INV) DIFF
gpiobase+0x0030: 0x0aff70ff (GPIO_USE_SEL2)
gpiobase+0x0030: 0x020300ff (GPIO_USE_SEL2) DEFAULT
gpiobase+0x0030: 0x08fc7000 (GPIO_USE_SEL2) DIFF
gpiobase+0x0034: 0x15038ff2 (GP_IO_SEL2)
gpiobase+0x0034: 0x1f57fff4 (GP_IO_SEL2) DEFAULT
gpiobase+0x0034: 0x0a547006 (GP_IO_SEL2) DIFF
gpiobase+0x0038: 0xb65e7f4f (GP_LVL2)
gpiobase+0x0038: 0xa4aa0007 (GP_LVL2) DEFAULT
gpiobase+0x0038: 0x12f47f48 (GP_LVL2) DIFF
gpiobase+0x003c: 0x00000000 (RESERVED)
gpiobase+0x0040: 0x000001f3 (GPIO_USE_SEL3)
gpiobase+0x0040: 0x00000130 (GPIO_USE_SEL3) DEFAULT
gpiobase+0x0040: 0x000000c3 (GPIO_USE_SEL3) DIFF
gpiobase+0x0044: 0x00000ef3 (GPIO_SEL3)
gpiobase+0x0044: 0x00000ff0 (GPIO_SEL3) DEFAULT
gpiobase+0x0044: 0x00000103 (GPIO_SEL3) DIFF
gpiobase+0x0048: 0x00000dfc (GPIO_LVL3)
gpiobase+0x0048: 0x000000c0 (GPIO_LVL3) DEFAULT
gpiobase+0x0048: 0x00000d3c (GPIO_LVL3) DIFF
gpiobase+0x004c: 0x00000000 (RESERVED)
gpiobase+0x0050: 0x00000000 (RESERVED)
gpiobase+0x0054: 0x00000000 (RESERVED)
gpiobase+0x0058: 0x00000000 (RESERVED)
gpiobase+0x005c: 0x00000000 (RESERVED)
gpiobase+0x0060: 0x00000000 (GP_RST_SEL1)
gpiobase+0x0060: 0x01000000 (GP_RST_SEL1) DEFAULT
gpiobase+0x0060: 0x01000000 (GP_RST_SEL1) DIFF
gpiobase+0x0064: 0x00000000 (GP_RST_SEL2)
gpiobase+0x0068: 0x00000000 (GP_RST_SEL3)
gpiobase+0x006c: 0x00000000 (RESERVED)
gpiobase+0x0070: 0x00000000 (RESERVED)
gpiobase+0x0074: 0x00000000 (RESERVED)
gpiobase+0x0078: 0x00000000 (RESERVED)
gpiobase+0x007c: 0x00000000 (RESERVED)

Change-Id: Ic77474c4bc0871e95103ddecd9f6a9406c8f016d
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: http://review.coreboot.org/3000
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/util/inteltool/inteltool.h b/util/inteltool/inteltool.h
index ac23fe143a..5a6dcc8f0d 100644
--- a/util/inteltool/inteltool.h
+++ b/util/inteltool/inteltool.h
@@ -164,7 +164,7 @@ int print_intel_core_msrs(void);
 int print_mchbar(struct pci_dev *nb, struct pci_access *pacc);
 int print_pmbase(struct pci_dev *sb, struct pci_access *pacc);
 int print_rcba(struct pci_dev *sb);
-int print_gpios(struct pci_dev *sb);
+int print_gpios(struct pci_dev *sb, int show_all, int show_diffs);
 int print_epbar(struct pci_dev *nb);
 int print_dmibar(struct pci_dev *nb);
 int print_pciexbar(struct pci_dev *nb);