[U-Boot] [PATCH 00/13] dm: arm: zynq: Convert serial driver to driver model

Wed Sep 2 16:05:51 CEST 2015

Hi Michael,

On 1 September 2015 at 11:50, Michal Simek <monstr at monstr.eu> wrote:
> On 09/01/2015 07:41 PM, Michal Simek wrote:
>> On 09/01/2015 01:12 AM, Simon Glass wrote:
>>> Hi Michal,
>>>
>>> On 31 August 2015 at 08:11, Michal Simek <monstr at monstr.eu> wrote:
>>>> On 08/29/2015 05:10 PM, Simon Glass wrote:
>>>>> This series updates the Zynq serial driver to use driver model. Along the
>>>>> way several problems are fixed:
>>>>>
>>>>> - Support for /chosen/stdout-path using an alias
>>>>> - Fix to fdtgrep which is currently breaking alias building
>>>>> - Avoid building u-boot-spl-dtb.bin when it is not requested
>>>>> - Deal with boards which have BSS in SDRAM
>>>>>
>>>>> For zynq this series makes a few changes:
>>>>> - Use the new SPL init procedure, which just involves a few tweaks for zynq
>>>>> - Add debug UART support
>>>>> - Move to using a separate device tree instead of embedded
>>>>>
>>>>> Only zybo has been tested. Testing on other zynq boards is welcome. They are
>>>>> all set up roughly the same so I expect only minor problems.
>>>>>
>>>>> For some reason zynqmp does not have a device tree, so this series does not
>>>>> work on that. But that board fails to build on mainline for me anyway so
>>>>> perhaps nothing is lost. I don't have a board to test with so help on this
>>>>> would be appreciated!
>>>>
>>>> I have no problem to build zynqmp on my PC. Can you please c&p error
>>>> which you are getting?
>>>
>>> I get this:
>>>
>>> $ buildman zynqmp
>>> Building current source for 1 boards (1 thread, 32 jobs per thread)
>>>    aarch64:  +   xilinx_zynqmp_ep
>>> +      ((u32)(priv->rxbuffers) +
>>> +       ^
>>> +   writel((u32)priv->rx_bd, &regs->rxqbase);
>>> +          ^
>>> +arch/arm/include/asm/io.h:146:34: note: in definition of macro 'writel'
>>> + #define writel(v,c) ({ u32 __v = v; __iowmb(); __arch_putl(__v,c); __v; })
>>> +                                  ^
>>> +  writel((u32)priv->tx_bd, &regs->txqbase);
>>> +         ^
>>> +  priv->tx_bd->addr = (u32)ptr;
>>> +                      ^
>>> +  addr = (u32) ptr;
>>> +  addr = (u32)priv->rxbuffers;
>>> +   net_process_received_packet((u8 *)addr, frame_len);
>>> +                               ^
>>> +  priv->rx_bd = (struct emac_bd *)((u32)bd_space + BD_SEPRN_SPACE);
>>> +                                   ^
>>> +                ^
>>> +  dwc3_flush_cache((int)trb, sizeof(*trb));
>>> +                   ^
>>> +  dma_unmap_single((void *)dwc->scratch_addr, dwc->nr_scratch *
>>> +  dma_unmap_single((void *)req->dma, req->length,
>>> +    dwc3_flush_cache((int)trb, sizeof(*trb));
>>> +                     ^
>>> +   dwc3_flush_cache((int)dwc->ep0_bounce, DWC3_EP0_BOUNCE_SIZE);
>>> +                    ^
>>> +  dwc->regs = (int *)(dwc3_dev->base + DWC3_GLOBALS_REGS_START);
>>> +              ^
>>> +  debug("%s: dev->in_req->length:%d to_cpy:%d\n", __func__,
>>> +  ^
>>> +    dwc3_flush_cache((int)evt->buf, evt->length);
>>> w+drivers/net/zynq_gem.c: In function 'zynq_gem_init':
>>> w+drivers/net/zynq_gem.c:330:7: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+In file included from drivers/net/zynq_gem.c:19:0:
>>> w+drivers/net/zynq_gem.c:336:10: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/net/zynq_gem.c: In function 'zynq_gem_send':
>>> w+drivers/net/zynq_gem.c:399:9: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/net/zynq_gem.c:404:22: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/net/zynq_gem.c:409:9: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/net/zynq_gem.c:414:9: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/net/zynq_gem.c: In function 'zynq_gem_recv':
>>> w+drivers/net/zynq_gem.c:454:31: warning: cast to pointer from integer
>>> of different size [-Wint-to-pointer-cast]
>>> w+drivers/net/zynq_gem.c: In function 'zynq_gem_initialize':
>>> w+drivers/net/zynq_gem.c:533:35: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/net/zynq_gem.c:533:16: warning: cast to pointer from integer
>>> of different size [-Wint-to-pointer-cast]
>>> w+drivers/usb/dwc3/ep0.c: In function 'dwc3_ep0_start_trans':
>>> w+drivers/usb/dwc3/ep0.c:85:19: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/usb/dwc3/core.c: In function 'dwc3_setup_scratch_buffers':
>>> w+drivers/usb/dwc3/core.c:284:19: warning: cast to pointer from
>>> integer of different size [-Wint-to-pointer-cast]
>>> w+drivers/usb/dwc3/core.c: In function 'dwc3_free_scratch_buffers':
>>> w+drivers/usb/dwc3/core.c:299:19: warning: cast to pointer from
>>> integer of different size [-Wint-to-pointer-cast]
>>> w+drivers/usb/gadget/udc/udc-core.c: In function 'usb_gadget_unmap_request':
>>> w+drivers/usb/gadget/udc/udc-core.c:68:19: warning: cast to pointer
>>> from integer of different size [-Wint-to-pointer-cast]
>>> w+drivers/usb/dwc3/ep0.c: In function 'dwc3_ep0_complete_data':
>>> w+drivers/usb/dwc3/ep0.c:793:19: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/usb/dwc3/ep0.c:824:21: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/usb/dwc3/ep0.c:834:20: warning: cast from pointer to integer
>>> of different size [-Wpointer-to-int-cast]
>>> w+drivers/usb/dwc3/core.c: In function 'dwc3_uboot_init':
>>> w+drivers/usb/dwc3/core.c:632:14: warning: cast to pointer from
>>> integer of different size [-Wint-to-pointer-cast]
>>> w+drivers/usb/dwc3/gadget.c: In function 'dwc3_prepare_one_trb':
>>> w+drivers/usb/dwc3/gadget.c:775:19: warning: cast from pointer to
>>> integer of different size [-Wpointer-to-int-cast]
>>> w+drivers/usb/dwc3/gadget.c: In function 'dwc3_cleanup_done_reqs':
>>> w+drivers/usb/dwc3/gadget.c:1772:19: warning: cast from pointer to
>>> integer of different size [-Wpointer-to-int-cast]
>>> w+drivers/usb/gadget/f_thor.c: In function 'thor_tx_data':
>>> w+drivers/usb/gadget/f_thor.c:568:2: warning: format '%d' expects
>>> argument of type 'int', but argument 4 has type 'long unsigned int'
>>> [-Wformat=]
>>> w+drivers/usb/dwc3/gadget.c: In function 'dwc3_gadget_uboot_handle_interrupt':
>>> w+drivers/usb/dwc3/gadget.c:2673:21: warning: cast from pointer to
>>> integer of different size [-Wpointer-to-int-cast]
>>>     0    1    0 /1      xilinx_zynqmp_ep
>>>
>>
>> Here are step for running qemu.
>>
>> git clone git://git.qemu.org/qemu.git
>> cd qemu
>> git submodule update --init pixman
>> ./configure --target-list=aarch64-softmmu --disable-werror
>>
>> ./aarch64-softmmu/qemu-system-aarch64 -M xlnx-ep108 -display none
>> -kernel /mnt/disk/u-boot/u-boot.elf -m 8000000 -nographic -serial mon:stdio
>>
>> Please try and you will see.
>>
>> I have ZynqMP Serial DM. Will send patches tmr.
>
> One more thing I forget is that for that get up and running I had to
> cherry-pick your reverted patch
> "fdt: Fix fdtdec_get_addr_size() for 64-bit"
> (sha1: 6fd4307bd55ba0e216770bdf362d2ce5f37a2311) because zynqmp is using
> address-cells 2 and size cells 1 which is not covered in the current HEAD.

OK thanks for the info.

Do you have patches to move zynqmp to device tree? That would be a
prerequisite for any patches I send.

Regards,
Simon