brcm2708: rename target to bcm27xx

This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 154 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0287-video-bcm2708_fb-Add-compat_ioctl-support.patch b/target/linux/bcm27xx/patches-4.19/950-0287-video-bcm2708_fb-Add-compat_ioctl-support.patch
new file mode 100644
index 0000000000..eb53480080
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0287-video-bcm2708_fb-Add-compat_ioctl-support.patch
@@ -0,0 +1,154 @@
+From b5bd7b621f6ab2f29e9f18ec2a2720d702b9727c Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Fri, 25 Jan 2019 17:12:54 +0000
+Subject: [PATCH] video: bcm2708_fb: Add compat_ioctl support.
+
+When using a 64 bit kernel with 32 bit userspace we need
+compat ioctl handling for FBIODMACOPY as one of the
+parameters is a pointer.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/video/fbdev/bcm2708_fb.c | 87 ++++++++++++++++++++++++--------
+ 1 file changed, 66 insertions(+), 21 deletions(-)
+
+--- a/drivers/video/fbdev/bcm2708_fb.c
++++ b/drivers/video/fbdev/bcm2708_fb.c
+@@ -482,9 +482,8 @@ static void dma_memcpy(struct bcm2708_fb
+ /* cache coherent but non-allocating in L1 and L2 */
+ #define INTALIAS_L1L2_NONALLOCATING(x) (((x)&~0xc0000000)|0x80000000)
+ 
+-static long vc_mem_copy(struct bcm2708_fb *fb, unsigned long arg)
++static long vc_mem_copy(struct bcm2708_fb *fb, struct fb_dmacopy *ioparam)
+ {
+-	struct fb_dmacopy ioparam;
+ 	size_t size = PAGE_SIZE;
+ 	u32 *buf = NULL;
+ 	dma_addr_t bus_addr;
+@@ -497,26 +496,16 @@ static long vc_mem_copy(struct bcm2708_f
+ 		goto out;
+ 	}
+ 
+-	/* Get the parameter data.
+-	 */
+-	if (copy_from_user
+-	    (&ioparam, (void *)arg, sizeof(ioparam)) != 0) {
+-		pr_err("[%s]: failed to copy-from-user\n",
+-				__func__);
+-		rc = -EFAULT;
+-		goto out;
+-	}
+-
+-	if (fb->gpu.base == 0 || fb->gpu.length == 0) {
++	if (!fb->gpu.base || !fb->gpu.length) {
+ 		pr_err("[%s]: Unable to determine gpu memory (%x,%x)\n",
+ 			__func__, fb->gpu.base, fb->gpu.length);
+ 		return -EFAULT;
+ 	}
+ 
+-	if (INTALIAS_NORMAL(ioparam.src) < fb->gpu.base ||
+-		INTALIAS_NORMAL(ioparam.src) >= fb->gpu.base + fb->gpu.length) {
++	if (INTALIAS_NORMAL(ioparam->src) < fb->gpu.base ||
++	    INTALIAS_NORMAL(ioparam->src) >= fb->gpu.base + fb->gpu.length) {
+ 		pr_err("[%s]: Invalid memory access %x (%x-%x)", __func__,
+-			INTALIAS_NORMAL(ioparam.src), fb->gpu.base,
++			INTALIAS_NORMAL(ioparam->src), fb->gpu.base,
+ 			fb->gpu.base + fb->gpu.length);
+ 		return -EFAULT;
+ 	}
+@@ -530,11 +519,11 @@ static long vc_mem_copy(struct bcm2708_f
+ 		goto out;
+ 	}
+ 
+-	for (offset = 0; offset < ioparam.length; offset += size) {
+-		size_t remaining = ioparam.length - offset;
++	for (offset = 0; offset < ioparam->length; offset += size) {
++		size_t remaining = ioparam->length - offset;
+ 		size_t s = min(size, remaining);
+-		unsigned char *p = (unsigned char *)ioparam.src + offset;
+-		unsigned char *q = (unsigned char *)ioparam.dst + offset;
++		u8 *p = (u8 *)((uintptr_t)ioparam->src + offset);
++		u8 *q = (u8 *)ioparam->dst + offset;
+ 
+ 		dma_memcpy(fb, bus_addr,
+ 			   INTALIAS_L1L2_NONALLOCATING((dma_addr_t)p), size);
+@@ -566,8 +555,19 @@ static int bcm2708_ioctl(struct fb_info
+ 					    &dummy, sizeof(dummy));
+ 		break;
+ 	case FBIODMACOPY:
+-		ret = vc_mem_copy(fb, arg);
++	{
++		struct fb_dmacopy ioparam;
++		/* Get the parameter data.
++		 */
++		if (copy_from_user
++		    (&ioparam, (void *)arg, sizeof(ioparam))) {
++			pr_err("[%s]: failed to copy-from-user\n", __func__);
++			ret = -EFAULT;
++			break;
++		}
++		ret = vc_mem_copy(fb, &ioparam);
+ 		break;
++	}
+ 	default:
+ 		dev_dbg(info->device, "Unknown ioctl 0x%x\n", cmd);
+ 		return -ENOTTY;
+@@ -578,6 +578,48 @@ static int bcm2708_ioctl(struct fb_info
+ 
+ 	return ret;
+ }
++
++#ifdef CONFIG_COMPAT
++struct fb_dmacopy32 {
++	compat_uptr_t dst;
++	__u32 src;
++	__u32 length;
++};
++
++#define FBIODMACOPY32		_IOW('z', 0x22, struct fb_dmacopy32)
++
++static int bcm2708_compat_ioctl(struct fb_info *info, unsigned int cmd,
++				unsigned long arg)
++{
++	struct bcm2708_fb *fb = to_bcm2708(info);
++	int ret;
++
++	switch (cmd) {
++	case FBIODMACOPY32:
++	{
++		struct fb_dmacopy32 param32;
++		struct fb_dmacopy param;
++		/* Get the parameter data.
++		 */
++		if (copy_from_user(&param32, (void *)arg, sizeof(param32))) {
++			pr_err("[%s]: failed to copy-from-user\n", __func__);
++			ret = -EFAULT;
++			break;
++		}
++		param.dst = compat_ptr(param32.dst);
++		param.src = param32.src;
++		param.length = param32.length;
++		ret = vc_mem_copy(fb, &param);
++		break;
++	}
++	default:
++		ret = bcm2708_ioctl(info, cmd, arg);
++		break;
++	}
++	return ret;
++}
++#endif
++
+ static void bcm2708_fb_fillrect(struct fb_info *info,
+ 				const struct fb_fillrect *rect)
+ {
+@@ -768,6 +810,9 @@ static struct fb_ops bcm2708_fb_ops = {
+ 	.fb_imageblit = bcm2708_fb_imageblit,
+ 	.fb_pan_display = bcm2708_fb_pan_display,
+ 	.fb_ioctl = bcm2708_ioctl,
++#ifdef CONFIG_COMPAT
++	.fb_compat_ioctl = bcm2708_compat_ioctl,
++#endif
+ };
+ 
+ static int bcm2708_fb_register(struct bcm2708_fb *fb)