Hello,
I am using the Terasic DE10-Standard development board and Quartus II 18.1 Standard
to develop an embedded system based on the Cyclone V and the DE10-Standard_LXDE version of
the Linux system provided by Terasic. I cloned the sources for u-boot and the kernel from
https://github.com/terasic/…
I have a broken kernel build. As of 9/25/2019 I was able to build the kernel without errors.
As of today, 10/28/2020 I encounter the following errors:
CHK include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
make[1]: include/generated/mach-types.h' is up to date. CHK include/generated/bounds.h CHK include/generated/timeconst.h CHK include/generated/asm-offsets.h CALL scripts/checksyscalls.sh CHK include/generated/compile.h CHK kernel/config_data.h CC drivers/video/fbdev/altvipfb2-plat.o LD drivers/video/fbdev/altvipfb2_drv.o LD drivers/video/fbdev/built-in.o drivers/video/fbdev/altvipfb2_drv.o:(___ksymtab_gpl+altvipfb2_probe+0x0): multiple definition of __ksymtab_altvipfb2_probe’
drivers/video/fbdev/altvipfb2.o:(___ksymtab_gpl+altvipfb2_probe+0x0): first defined here
drivers/video/fbdev/altvipfb2_drv.o: In function altvipfb2_plat_remove': /home/bmartinez/JT/linux/terasic/linux-socfpga/drivers/video/fbdev/altvipfb2-plat.c:122: multiple definition of __ksymtab_altvipfb2_remove’
drivers/video/fbdev/altvipfb2.o:/home/bmartinez/JT/linux/terasic/linux-socfpga/drivers/video/fbdev/altvipfb2.c:136: first defined here
drivers/video/fbdev/altvipfb2_drv.o: In function altvipfb2_probe': /home/bmartinez/JT/linux/terasic/linux-socfpga/drivers/video/fbdev/altvipfb2.c:136: multiple definition of altvipfb2_probe’
drivers/video/fbdev/altvipfb2.o:/home/bmartinez/JT/linux/terasic/linux-socfpga/drivers/video/fbdev/altvipfb2.c:136: first defined here
drivers/video/fbdev/altvipfb2_drv.o: In function altvipfb2_remove': /home/bmartinez/JT/linux/terasic/linux-socfpga/drivers/video/fbdev/altvipfb2.c:178: multiple definition of altvipfb2_remove’
drivers/video/fbdev/altvipfb2.o:/home/bmartinez/JT/linux/terasic/linux-socfpga/drivers/video/fbdev/altvipfb2.c:178: first defined here
make[3]: *** [drivers/video/fbdev/built-in.o] Error 1
make[2]: *** [drivers/video/fbdev] Error 2
make[1]: *** [drivers/video] Error 2
make: *** [drivers] Error 2
I am cross compiling using gcc-linaro-6.5.0-2018.12-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf.
I am using ubuntu 16.04 LTS in a virtualbox VM.
Here are the relevant statements in the drivers/video/fbdev/Makefile
obj-$(CONFIG_FB_ALTERA_VIP_FB2) += altvipfb2.o
obj-$(CONFIG_FB_ALTERA_VIP_FB2_PLAT) += altvipfb2_drv.o
altvipfb2_drv-objs := altvipfb2-plat.o altvipfb2.o
Here are the function declarations in altvipfb2.h, which is included in both source modules:
int altvipfb2_probe(struct device *dev, void __iomem *base);
int altvipfb2_remove(struct device *dev);
I added extern to the above declarations, but this change did not fix the problem.
Here is the relevant code snippets from altvipfb2.c:
int altvipfb2_probe(struct device *dev, void __iomem *base)
{
int retval;
void *fbmem_virt;
struct altvipfb2_priv *fbpriv = dev_get_drvdata(dev);
fbmem_virt = dma_alloc_coherent(NULL,
fbpriv->info.fix.smem_len,
(void *)&fbpriv->info.fix.smem_start,
GFP_KERNEL);
if (!fbmem_virt) {
dev_err(dev,
"altvipfb2: unable to allocate %d Bytes fb memory\n",
fbpriv->info.fix.smem_len);
return -ENOMEM;
}
fbpriv->info.screen_base = (char *)fbmem_virt;
retval = fb_alloc_cmap(&fbpriv->info.cmap, PALETTE_SIZE, 0);
if (retval < 0)
goto err_dma_free;
altvipfb2_setup_fb_info(fbpriv);
altvipfb2_start_hw(base, &fbpriv->info);
dev_info(dev, "fb%d: %s frame buffer device at 0x%x+0x%x\n",
fbpriv->info.node, fbpriv->info.fix.id,
(unsigned int)fbpriv->info.fix.smem_start,
fbpriv->info.fix.smem_len);
return register_framebuffer(&fbpriv->info);
err_dma_free:
fb_dealloc_cmap(&fbpriv->info.cmap);
dma_free_coherent(NULL, fbpriv->info.fix.smem_len, fbmem_virt,
fbpriv->info.fix.smem_start);
return retval;
}
EXPORT_SYMBOL_GPL(altvipfb2_probe);
int altvipfb2_remove(struct device *dev)
{
struct altvipfb2_priv *fbpriv = dev_get_drvdata(dev);
altvipfb2_disable_hw(fbpriv->base);
dma_free_coherent(NULL, fbpriv->info.fix.smem_len,
(void *)&fbpriv->info.screen_base,
fbpriv->info.fix.smem_start);
return unregister_framebuffer(&fbpriv->info);
}
EXPORT_SYMBOL_GPL(altvipfb2_remove);
Here are the affected code snippets from altvipfb2-plat.c:
static int altvipfb2_plat_probe(struct platform_device *pdev)
{
int retval;
struct device *dev = &pdev->dev;
struct resource *reg_res;
struct altvipfb2_priv *fbdev;
fbdev = devm_kzalloc(dev, sizeof(*fbdev), GFP_KERNEL);
if (!fbdev)
return -ENOMEM;
reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!reg_res)
return -ENODEV;
fbdev->base = devm_ioremap_resource(dev, reg_res);
if (IS_ERR(fbdev->base)) {
dev_err(dev, "devm_ioremap_resource failed\n");
retval = PTR_ERR(fbdev->base);
return -ENOMEM;
}
altvipfb2_of_setup(fbdev, pdev);
platform_set_drvdata(pdev, fbdev);
return altvipfb2_probe(dev, fbdev->base);
}
static int altvipfb2_plat_remove(struct platform_device *pdev)
{
return altvipfb2_remove(&pdev->dev);
}
Please let me know of any changes that may have occurred since last year.
Thanks,
Ben Martinez