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* [U-Boot] [PATCH 00/15] MIPS Malta board support
@ 2013-10-23 10:07 Paul Burton
  2013-10-23 10:07 ` [U-Boot] [PATCH 01/15] mips32: detect L1 cache sizes if they're not defined Paul Burton
                   ` (14 more replies)
  0 siblings, 15 replies; 36+ messages in thread
From: Paul Burton @ 2013-10-23 10:07 UTC (permalink / raw)
  To: u-boot

This series adds support for booting on a physical MIPS Malta board
using a coreFPGA6 core card.

The first 6 patches lay some groundwork, then the next 8 genericise
the existing qemu-malta board to also function on a physical Malta.

In the final patch I stake my claim upon, errm I mean step up to
support :), the malta(el) board(s).

Paul Burton (15):
  mips32: detect L1 cache sizes if they're not defined
  pcnet: code style cleanup
  pcnet: s/le16_to_cpu/cpu_to_le16/ in pcnet_send
  pcnet: add cache flushing & invalidation
  pcnet: enable the NOUFLO feature
  pci.h: allow inclusion in assembly source
  qemu-malta: rename to just "malta"
  malta: setup super I/O UARTs
  malta: support for coreFPGA6 boards
  malta: display "U-boot" on the LCD screen
  malta: enable CONFIG_PCNET_79C973, PCNET_HAS_PROM, CONFIG_CMD_DHCP
  malta: remove cache size definitions
  malta: disable L2 caches
  malta: add script & instructions to flash U-boot
  malta: add myself to maintainers

 arch/mips/cpu/mips32/cache.S     |  90 +++++++++++--
 arch/mips/cpu/mips32/cpu.c       |  73 +++++++++-
 arch/mips/include/asm/malta.h    |  45 ++++++-
 arch/mips/include/asm/mipsregs.h |   6 +
 arch/mips/lib/bootm.c            |  12 +-
 board/malta/Makefile             |  29 ++++
 board/malta/README               |  16 +++
 board/malta/flash-malta-boot.tcl |  40 ++++++
 board/malta/lowlevel_init.S      | 238 +++++++++++++++++++++++++++++++++
 board/malta/malta.c              | 186 ++++++++++++++++++++++++++
 board/malta/superio.c            |  63 +++++++++
 board/malta/superio.h            |  15 +++
 board/qemu-malta/Makefile        |  29 ----
 board/qemu-malta/lowlevel_init.S |  69 ----------
 board/qemu-malta/qemu-malta.c    |  47 -------
 boards.cfg                       |   4 +-
 drivers/net/pcnet.c              | 279 +++++++++++++++++++++------------------
 drivers/pci/Makefile             |   1 +
 drivers/pci/pci_msc01.c          | 126 ++++++++++++++++++
 include/configs/malta.h          | 115 ++++++++++++++++
 include/configs/qemu-malta.h     | 114 ----------------
 include/msc01.h                  | 135 +++++++++++++++++++
 include/pci.h                    |   6 +-
 include/pci_ids.h                |   3 +
 include/pci_msc01.h              |  17 +++
 25 files changed, 1340 insertions(+), 418 deletions(-)
 create mode 100644 board/malta/Makefile
 create mode 100644 board/malta/README
 create mode 100644 board/malta/flash-malta-boot.tcl
 create mode 100644 board/malta/lowlevel_init.S
 create mode 100644 board/malta/malta.c
 create mode 100644 board/malta/superio.c
 create mode 100644 board/malta/superio.h
 delete mode 100644 board/qemu-malta/Makefile
 delete mode 100644 board/qemu-malta/lowlevel_init.S
 delete mode 100644 board/qemu-malta/qemu-malta.c
 create mode 100644 drivers/pci/pci_msc01.c
 create mode 100644 include/configs/malta.h
 delete mode 100644 include/configs/qemu-malta.h
 create mode 100644 include/msc01.h
 create mode 100644 include/pci_msc01.h

-- 
1.8.4

^ permalink raw reply	[flat|nested] 36+ messages in thread
* [U-Boot] [PATCH 09/15] malta: support for coreFPGA6 boards
@ 2013-10-24 11:23 Daniel Schwierzeck
  0 siblings, 0 replies; 36+ messages in thread
From: Daniel Schwierzeck @ 2013-10-24 11:23 UTC (permalink / raw)
  To: u-boot

2013/10/24 Paul Burton <paul.burton@imgtec.com>:
>>> diff --git a/drivers/pci/pci_msc01.c b/drivers/pci/pci_msc01.c
>>> new file mode 100644
>>> index 0000000..7904378
>>> --- /dev/null
>>> +++ b/drivers/pci/pci_msc01.c
>>> @@ -0,0 +1,126 @@
>>> +/*
>>> + * Copyright (C) 2013 Imagination Technologies
>>> + * Author: Paul Burton <paul.burton@imgtec.com>
>>> + *
>>> + * SPDX-License-Identifier:    GPL-2.0+
>>> + */
>>> +
>>> +#include <common.h>
>>> +#include <msc01.h>
>>> +#include <pci.h>
>>> +#include <pci_msc01.h>
>>> +#include <asm/io.h>
>>> +
>>> +#define PCI_ACCESS_READ  0
>>> +#define PCI_ACCESS_WRITE 1
>>> +
>>> +struct msc01_pci_controller {
>>> +       struct pci_controller hose;
>>> +       void *base;
>>> +};
>>> +
>>> +static inline struct msc01_pci_controller *
>>> +hose_to_msc01(struct pci_controller *hose)
>>> +{
>>> +       return container_of(hose, struct msc01_pci_controller, hose);
>>> +}
>>> +
>>> +static int msc01_config_access(struct msc01_pci_controller *msc01,
>>> +                              unsigned char access_type, pci_dev_t bdf,
>>> +                              int where, u32 *data)
>>> +{
>>> +       const u32 aborts = MSC01_PCI_INTSTAT_MA_MSK |
>>> MSC01_PCI_INTSTAT_TA_MSK;
>>> +       void *intstat = msc01->base + MSC01_PCI_INTSTAT_OFS;
>>> +       void *cfgdata = msc01->base + MSC01_PCI_CFGDATA_OFS;
>>> +       unsigned int bus = PCI_BUS(bdf);
>>> +       unsigned int dev = PCI_DEV(bdf);
>>> +       unsigned int devfn = PCI_DEV(bdf) << 3 | PCI_FUNC(bdf);
>>> +       u32 status;
>>
>>
>> gcc-4.8 shows a warning:
>>
>> pci_msc01.c: In function 'msc01_config_access':
>> pci_msc01.c:38:6: warning: unused variable 'status' [-Wunused-variable]
>>    u32 status;
>>        ^
>
>
> Right you are.
>
>
>>
>>
>>> +
>>> +       /* clear abort status */
>>> +       __raw_writel(aborts, intstat);
>>> +
>>> +       /* setup address */
>>> +       __raw_writel((bus << MSC01_PCI_CFGADDR_BNUM_SHF) |
>>> +                    (dev << MSC01_PCI_CFGADDR_DNUM_SHF) |
>>> +                    (devfn << MSC01_PCI_CFGADDR_FNUM_SHF) |
>>> +                    ((where / 4) << MSC01_PCI_CFGADDR_RNUM_SHF),
>>> +                    msc01->base + MSC01_PCI_CFGADDR_OFS);
>>
>>
>> Contrary to the kernel U-Boot code must not use  base + offset in IO
>> primitives. Registers should be implemented with a struct.
>> For example:
>>
>> struct foobar_regs {
>>      u32 foo;
>>      u32 bar;
>> };
>>
>> struct foobar_regs *regs = (struct foobar_regs *)CKSEG1ADDR(FOOBAR_BASE);
>> u32 val = __raw_readl(&regs->foo);
>
>
> Could you point me to somewhere stating that? (and why?) I can't find
> anything in README and I can see plenty of code using base+offset already in
> U-boot. In this case the assembly in lowlevel_init.S has to access various
> registers so using the offsets in C means I don't need to duplicate the
> information in both struct & offset macro forms. I don't mind too much if
> it's a rule but I'd like to see some justification/reasoning before I change
> this.
>
> Thanks for the review,
>     Paul
>

I primarily know it form many review comments by Wolfgang Denk. Some
references I've found in ML archives:

[1] http://u-boot.10912.n7.nabble.com/U-Boot-structure-usage-for-peripheral-registers-tc37050.html#none
[2] http://u-boot.10912.n7.nabble.com/U-Boot-PATCH-v5-0-8-those-series-patches-for-add-ben-nanonote-board-tc17476.html#none

@Wolfgang, could you comment please? Also this requirement should be
documented in README or Wiki, shouldn't it?

-- 
Best regards,
Daniel

^ permalink raw reply	[flat|nested] 36+ messages in thread

end of thread, other threads:[~2013-10-24 12:14 UTC | newest]

Thread overview: 36+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-10-23 10:07 [U-Boot] [PATCH 00/15] MIPS Malta board support Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 01/15] mips32: detect L1 cache sizes if they're not defined Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 02/15] pcnet: code style cleanup Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 03/15] pcnet: s/le16_to_cpu/cpu_to_le16/ in pcnet_send Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 04/15] pcnet: add cache flushing & invalidation Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 05/15] pcnet: enable the NOUFLO feature Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 06/15] pci.h: allow inclusion in assembly source Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 07/15] qemu-malta: rename to just "malta" Paul Burton
2013-10-23 22:50   ` Daniel Schwierzeck
2013-10-24  9:31     ` [U-Boot] [PATCH v2 " Paul Burton
2013-10-24 10:04       ` Gabor Juhos
2013-10-24 10:10         ` Paul Burton
2013-10-24 10:43           ` Gabor Juhos
2013-10-24 10:54             ` Paul Burton
2013-10-24 11:51               ` Daniel Schwierzeck
2013-10-24 12:06               ` Gabor Juhos
2013-10-24 10:11         ` [U-Boot] [PATCH v3 " Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 08/15] malta: setup super I/O UARTs Paul Burton
2013-10-24  9:32   ` [U-Boot] [PATCH v2 " Paul Burton
2013-10-23 10:07 ` [U-Boot] [PATCH 09/15] malta: support for coreFPGA6 boards Paul Burton
2013-10-23 22:53   ` Daniel Schwierzeck
2013-10-24  9:33     ` [U-Boot] [PATCH v2 " Paul Burton
2013-10-24 12:14       ` Gabor Juhos
2013-10-24  9:47     ` [U-Boot] [PATCH " Paul Burton
2013-10-23 10:08 ` [U-Boot] [PATCH 10/15] malta: display "U-boot" on the LCD screen Paul Burton
2013-10-24  9:34   ` [U-Boot] [PATCH v2 " Paul Burton
2013-10-23 10:08 ` [U-Boot] [PATCH 11/15] malta: enable CONFIG_PCNET_79C973, PCNET_HAS_PROM, CONFIG_CMD_DHCP Paul Burton
2013-10-23 10:08 ` [U-Boot] [PATCH 12/15] malta: remove cache size definitions Paul Burton
2013-10-23 10:08 ` [U-Boot] [PATCH 13/15] malta: disable L2 caches Paul Burton
2013-10-24  9:34   ` [U-Boot] [PATCH v2 " Paul Burton
2013-10-23 10:08 ` [U-Boot] [PATCH 14/15] malta: add script & instructions to flash U-boot Paul Burton
2013-10-23 22:54   ` Daniel Schwierzeck
2013-10-24  9:35     ` [U-Boot] [PATCH v2 " Paul Burton
2013-10-23 10:11 ` [U-Boot] [PATCH 15/15] malta: add myself to maintainers Paul Burton
2013-10-24  9:36   ` [U-Boot] [PATCH v2 " Paul Burton
  -- strict thread matches above, loose matches on Subject: below --
2013-10-24 11:23 [U-Boot] [PATCH 09/15] malta: support for coreFPGA6 boards Daniel Schwierzeck

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