[U-Boot] [PATCH 3/3] x86: Added support for Advantech SOM-6896
George McCollister
george.mccollister at gmail.com
Mon Oct 12 20:30:46 CEST 2015
On Mon, Oct 12, 2015 at 8:34 AM, George McCollister
<george.mccollister at gmail.com> wrote:
> On Fri, Oct 9, 2015 at 10:31 PM, Bin Meng <bmeng.cn at gmail.com> wrote:
>> Hi George,
>>
>> On Sat, Oct 10, 2015 at 5:54 AM, George McCollister
>> <george.mccollister at gmail.com> wrote:
>>> Advantech SOM-6896 is a Broadwell U based COM Express Compact Module
>>> Type 6. This patch adds support for it as a coreboot payload.
>>>
>>> On board SATA and SPI are functional. On board Ethernet isn't functional
>>> but since it's optional and ties up a PCIe x4 that is otherwise brought
>>> out, this isn't a concern at the moment. USB doesn't work since the
>>> xHCI driver appears to be broken.
>>>
>>> Signed-off-by: George McCollister <george.mccollister at gmail.com>
>>> ---
>>> arch/x86/dts/Makefile | 3 ++-
>>> arch/x86/dts/som-6896.dts | 43 +++++++++++++++++++++++++++++++++++++++++++
>>> include/configs/som-6896.h | 38 ++++++++++++++++++++++++++++++++++++++
>>> 3 files changed, 83 insertions(+), 1 deletion(-)
>>> create mode 100644 arch/x86/dts/som-6896.dts
>>> create mode 100644 include/configs/som-6896.h
>>>
>>> diff --git a/arch/x86/dts/Makefile b/arch/x86/dts/Makefile
>>> index 71595c7..9fa2e21 100644
>>> --- a/arch/x86/dts/Makefile
>>> +++ b/arch/x86/dts/Makefile
>>> @@ -6,7 +6,8 @@ dtb-y += bayleybay.dtb \
>>> galileo.dtb \
>>> minnowmax.dtb \
>>> qemu-x86_i440fx.dtb \
>>> - qemu-x86_q35.dtb
>>> + qemu-x86_q35.dtb \
>>> + som-6896.dtb
>>>
>>> targets += $(dtb-y)
>>>
>>> diff --git a/arch/x86/dts/som-6896.dts b/arch/x86/dts/som-6896.dts
>>> new file mode 100644
>>> index 0000000..ad904c9
>>> --- /dev/null
>>> +++ b/arch/x86/dts/som-6896.dts
>>> @@ -0,0 +1,43 @@
>>> +/dts-v1/;
>>> +
>>> +/include/ "skeleton.dtsi"
>>> +/include/ "serial.dtsi"
>>> +/include/ "rtc.dtsi"
>>> +
>>> +/ {
>>> + model = "Advantech SOM-6896";
>>> + compatible = "advantech,som-6896", "intel,broadwell";
>>> +
>>> + aliases {
>>> + spi0 = "/spi";
>>> + };
>>> +
>>> + config {
>>> + silent_console = <0>;
>>> + };
>>> +
>>> + chosen {
>>> + stdout-path = "/serial";
>>> + };
>>> +
>>> + pci {
>>> + compatible = "intel,pci-broadwell", "pci-x86";
>>
>> I would just describe it as "pci-x86" as Intel chipset PCI is compatible.
> Okay
>>
>>> + #address-cells = <3>;
>>> + #size-cells = <2>;
>>> + u-boot,dm-pre-reloc;
>>> + ranges = <0x02000000 0x0 0xe0000000 0xe0000000 0 0x10000000
>>
>> Can you verify 0xe0000000 is not configured by coreboot as the PCIe
>> ECAM base address?
> I'll try to verify these, it's quite possible they are incorrect.
CONFIG_MMCONF_BASE_ADDRESS is set to 0xf0000000 in coreboot.
For prefmem/mem coreboot is showing:
DOMAIN: 0000 mem: base:d0000000 size:1111f120 align:28 gran:0 limit:efffffff
PCI: 00:02.0 18 * [0xd0000000 - 0xdfffffff] prefmem
PCI: 00:02.0 10 * [0xe0000000 - 0xe0ffffff] mem
PCI: 00:1c.0 20 * [0xe1000000 - 0xe10fffff] mem
PCI: 00:14.0 10 * [0xe1100000 - 0xe110ffff] mem
PCI: 00:1f.2 24 * [0xe1110000 - 0xe1117fff] mem
PCI: 00:1b.0 10 * [0xe1118000 - 0xe111bfff] mem
PCI: 00:15.0 10 * [0xe111c000 - 0xe111cfff] mem
PCI: 00:15.0 14 * [0xe111d000 - 0xe111dfff] mem
PCI: 00:1f.6 10 * [0xe111e000 - 0xe111efff] mem
PCI: 00:1f.3 10 * [0xe111f000 - 0xe111f0ff] mem
PCI: 00:16.0 10 * [0xe111f100 - 0xe111f11f] mem
DOMAIN: 0000 mem: next_base: e111f120 size: 1111f120 align: 28 gran: 0 done
PCI: 00:1c.0 prefmem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.0 prefmem: next_base: efffffff size: 0 align: 20 gran: 20 done
PCI: 00:1c.0 mem: base:e1000000 size:100000 align:20 gran:20 limit:e10fffff
PCI: 01:00.0 14 * [0xe1000000 - 0xe107ffff] mem
PCI: 01:00.0 30 * [0xe1080000 - 0xe10bffff] mem
PCI: 01:00.0 10 * [0xe10c0000 - 0xe10dffff] mem
PCI: 01:00.0 1c * [0xe10e0000 - 0xe10e3fff] mem
PCI: 00:1c.0 mem: next_base: e10e4000 size: 100000 align: 20 gran: 20 done
PCI: 00:1c.1 prefmem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.1 prefmem: next_base: efffffff size: 0 align: 20 gran: 20 done
PCI: 00:1c.1 mem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.1 mem: next_base: efffffff size: 0 align: 20 gran: 20 done
PCI: 00:1c.2 prefmem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.2 prefmem: next_base: efffffff size: 0 align: 20 gran: 20 done
PCI: 00:1c.2 mem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.2 mem: next_base: efffffff size: 0 align: 20 gran: 20 done
PCI: 00:1c.3 prefmem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.3 prefmem: next_base: efffffff size: 0 align: 20 gran: 20 done
PCI: 00:1c.3 mem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.3 mem: next_base: efffffff size: 0 align: 20 gran: 20 done
PCI: 00:1c.4 prefmem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.4 prefmem: next_base: efffffff size: 0 align: 20 gran: 20 done
PCI: 00:1c.4 mem: base:efffffff size:0 align:20 gran:20 limit:efffffff
PCI: 00:1c.4 mem: next_base: efffffff size: 0 align: 20 gran: 20 done
Based on that I think the prefetchable mem region and the mem region
are correct.
For io coreboot is showing:
DOMAIN: 0000 io: base:1900 size:1078 align:12 gran:0 limit:ffff
PCI: 00:1c.0 1c * [0x2000 - 0x2fff] io
PCI: 00:02.0 20 * [0x3000 - 0x303f] io
PCI: 00:1f.2 20 * [0x3040 - 0x305f] io
PCI: 00:1f.2 10 * [0x3060 - 0x3067] io
PCI: 00:1f.2 18 * [0x3068 - 0x306f] io
PCI: 00:1f.2 14 * [0x3070 - 0x3073] io
PCI: 00:1f.2 1c * [0x3074 - 0x3077] io
DOMAIN: 0000 io: next_base: 3078 size: 1078 align: 12 gran: 0 done
PCI: 00:1c.0 io: base:2000 size:1000 align:12 gran:12 limit:2fff
PCI: 01:00.0 18 * [0x2000 - 0x201f] io
PCI: 00:1c.0 io: next_base: 2020 size: 1000 align: 12 gran: 12 done
PCI: 00:1c.1 io: base:ffff size:0 align:12 gran:12 limit:ffff
PCI: 00:1c.1 io: next_base: ffff size: 0 align: 12 gran: 12 done
PCI: 00:1c.2 io: base:ffff size:0 align:12 gran:12 limit:ffff
PCI: 00:1c.2 io: next_base: ffff size: 0 align: 12 gran: 12 done
PCI: 00:1c.3 io: base:ffff size:0 align:12 gran:12 limit:ffff
PCI: 00:1c.3 io: next_base: ffff size: 0 align: 12 gran: 12 done
PCI: 00:1c.4 io: base:ffff size:0 align:12 gran:12 limit:ffff
PCI: 00:1c.4 io: next_base: ffff size: 0 align: 12 gran: 12 done
Based on that I'm thinking this:
0x01000000 0x0 0x1000 0x1000 0 0xefff>
Should actually be:
0x01000000 0x0 0x1900 0x1900 0 0xe700>;
>>
>>> + 0x42000000 0x0 0xd0000000 0xd0000000 0 0x10000000
>>> + 0x01000000 0x0 0x1000 0x1000 0 0xefff>;
>>> + };
>>> +
>>> + spi {
>>> + #address-cells = <1>;
>>> + #size-cells = <0>;
>>> + compatible = "intel,ich-spi";
>>> + spi-flash at 0 {
>>> + reg = <0>;
>>> + compatible = "winbond,w25q128", "spi-flash";
>>> + memory-map = <0xff800000 0x00800000>;
>>> + };
>>> + };
>>> +};
>>> diff --git a/include/configs/som-6896.h b/include/configs/som-6896.h
>>> new file mode 100644
>>> index 0000000..518bf11
>>> --- /dev/null
>>> +++ b/include/configs/som-6896.h
>>> @@ -0,0 +1,38 @@
>>> +/*
>>> + * Configuration settings for the SOM-6896
>>> + *
>>> + * Copyright (C) 2015 NovaTech LLC
>>> + * George McCollister <george.mccollister at gmail.com>
>>> + *
>>> + * SPDX-License-Identifier: GPL-2.0+
>>> + */
>>> +
>>> +#ifndef __CONFIG_H
>>> +#define __CONFIG_H
>>> +
>>> +#include <configs/x86-common.h>
>>> +
>>> +#define CONFIG_SYS_MONITOR_LEN (1 << 20)
>>> +
>>> +#define CONFIG_BOARD_EARLY_INIT_F
>>> +#define CONFIG_MISC_INIT_R
>>> +
>>> +#define CONFIG_SCSI_DEV_LIST \
>>> + {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_WILDCATPOINT_AHCI}
>>> +
>>> +#define CONFIG_SYS_EARLY_PCI_INIT
>>> +#define CONFIG_PCI_PNP
>>> +
>>> +#define VIDEO_IO_OFFSET 0
>>> +#define CONFIG_X86EMU_RAW_IO
>>> +
>>> +#define CONFIG_ARCH_EARLY_INIT_R
>>> +
>>> +#define CONFIG_STD_DEVICES_SETTINGS "stdin=serial,vga,usbkbd\0" \
>>> + "stdout=serial,vga\0" \
>>> + "stderr=serial,vga\0"
>>> +
>>> +#define CONFIG_ENV_SECT_SIZE 0x1000
>>> +#define CONFIG_ENV_OFFSET 0x00ff0000
>>
>> This address looks odd to me. As in the dts file, the SPI flash is
>> described as a 8MB chip, but here the offset is below 16MB, which is
>> outside the flash address range.
> Yeah it's a 16MB chip, I screwed that up, I'll fix it. Thanks for catching that.
>>
>>> +
>>> +#endif /* __CONFIG_H */
>>> --
>>
>> Regards,
>> Bin
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