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, 43 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0788-dwc_otg-constrain-endpoint-max-packet-and-transfer-s.patch b/target/linux/bcm27xx/patches-4.19/950-0788-dwc_otg-constrain-endpoint-max-packet-and-transfer-s.patch
new file mode 100644
index 0000000000..ae110add5a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0788-dwc_otg-constrain-endpoint-max-packet-and-transfer-s.patch
@@ -0,0 +1,43 @@
+From 7ae8ef63c14ca2fea76c9db5799321f1b3e31c36 Mon Sep 17 00:00:00 2001
+From: Jonathan Bell <jonathan@raspberrypi.org>
+Date: Tue, 7 Jan 2020 10:08:19 +0000
+Subject: [PATCH] dwc_otg: constrain endpoint max packet and transfer
+ size on split IN
+
+The hcd would unconditionally set the transfer length to the endpoint
+packet size for non-isoc IN transfers. If the remaining buffer length
+was less than the length of returned data, random memory would get
+scribbled over, with bad effects if it crossed a page boundary.
+
+Force a babble error if this happens by limiting the max transfer size
+to the available buffer space. DMA will stop writing to memory on a
+babble condition.
+
+The hardware expects xfersize to be an integer multiple of maxpacket
+size, so override hcchar.b.mps as well.
+
+Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
+---
+ drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
+@@ -1813,7 +1813,7 @@ int fiq_fsm_queue_split_transaction(dwc_
+ 	st->nr_errors = 0;
+ 
+ 	st->hcchar_copy.d32 = 0;
+-	st->hcchar_copy.b.mps = hc->max_packet;
++	st->hcchar_copy.b.mps = min_t(uint32_t, hc->xfer_len, hc->max_packet);
+ 	st->hcchar_copy.b.epdir = hc->ep_is_in;
+ 	st->hcchar_copy.b.devaddr = hc->dev_addr;
+ 	st->hcchar_copy.b.epnum = hc->ep_num;
+@@ -1858,7 +1858,7 @@ int fiq_fsm_queue_split_transaction(dwc_
+ 	st->hctsiz_copy.b.pid = hc->data_pid_start;
+ 
+ 	if (hc->ep_is_in || (hc->xfer_len > hc->max_packet)) {
+-		hc->xfer_len = hc->max_packet;
++		hc->xfer_len = min_t(uint32_t, hc->xfer_len, hc->max_packet);
+ 	} else if (!hc->ep_is_in && (hc->xfer_len > 188)) {
+ 		hc->xfer_len = 188;
+ 	}