platform-v7a: Add barebox patchstack

This adds a barebox patchstack which is needed for the rasperrypi which
otherwise issues several warnings during boot. While at it add DWC2 USB
support as well to finally get networking support for the raspberrypi.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 137 insertions, 0 deletions

diff --git a/configs/platform-v7a/patches/barebox-2019.12.0/0013-ARM-bcm2835-mbox-use-pr_-to-print-messages.patch b/configs/platform-v7a/patches/barebox-2019.12.0/0013-ARM-bcm2835-mbox-use-pr_-to-print-messages.patch
new file mode 100644
index 0000000..f9a34d1
--- /dev/null
+++ b/configs/platform-v7a/patches/barebox-2019.12.0/0013-ARM-bcm2835-mbox-use-pr_-to-print-messages.patch
@@ -0,0 +1,137 @@
+From: Sascha Hauer <s.hauer@pengutronix.de>
+Date: Tue, 7 Jan 2020 10:57:32 +0100
+Subject: [PATCH] ARM: bcm2835 mbox: use pr_* to print messages
+
+To give the user an idea where the messages come from.
+
+Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
+---
+ arch/arm/mach-bcm283x/mbox.c | 36 +++++++++++++++++++-----------------
+ 1 file changed, 19 insertions(+), 17 deletions(-)
+
+diff --git a/arch/arm/mach-bcm283x/mbox.c b/arch/arm/mach-bcm283x/mbox.c
+index 4405efaffd39..1b1981f7cb67 100644
+--- a/arch/arm/mach-bcm283x/mbox.c
++++ b/arch/arm/mach-bcm283x/mbox.c
+@@ -6,6 +6,8 @@
+  * SPDX-License-Identifier:	GPL-2.0+
+  */
+ 
++#define pr_fmt(fmt) "rpi-mbox: " fmt
++
+ #include <clock.h>
+ #include <common.h>
+ #include <dma.h>
+@@ -26,7 +28,7 @@ static int bcm2835_mbox_call_raw(u32 chan, struct bcm2835_mbox_hdr *buffer,
+ 	u32 val;
+ 
+ 	if (send & BCM2835_CHAN_MASK) {
+-		printf("mbox: Illegal mbox data 0x%08x\n", send);
++		pr_err("mbox: Illegal mbox data 0x%08x\n", send);
+ 		return -EINVAL;
+ 	}
+ 
+@@ -36,7 +38,7 @@ static int bcm2835_mbox_call_raw(u32 chan, struct bcm2835_mbox_hdr *buffer,
+ 		if (val & BCM2835_MBOX_STATUS_RD_EMPTY)
+ 			break;
+ 		if (is_timeout(starttime, TIMEOUT)) {
+-			printf("mbox: Timeout draining stale responses\n");
++			pr_err("mbox: Timeout draining stale responses\n");
+ 			return -ETIMEDOUT;
+ 		}
+ 		val = readl(mbox_base + MAIL0_RD);
+@@ -48,14 +50,14 @@ static int bcm2835_mbox_call_raw(u32 chan, struct bcm2835_mbox_hdr *buffer,
+ 		if (!(val & BCM2835_MBOX_STATUS_WR_FULL))
+ 			break;
+ 		if (is_timeout(starttime, TIMEOUT)) {
+-			printf("mbox: Timeout waiting for send space\n");
++			pr_err("mbox: Timeout waiting for send space\n");
+ 			return -ETIMEDOUT;
+ 		}
+ 	}
+ 
+ 	/* Send the request */
+ 	val = BCM2835_MBOX_PACK(chan, send);
+-	debug("mbox: TX raw: 0x%08x\n", val);
++	pr_debug("mbox: TX raw: 0x%08x\n", val);
+ 	dma_sync_single_for_device((unsigned long)send, buffer->buf_size,
+ 				   DMA_BIDIRECTIONAL);
+ 	writel(val, mbox_base + MAIL1_WRT);
+@@ -66,20 +68,20 @@ static int bcm2835_mbox_call_raw(u32 chan, struct bcm2835_mbox_hdr *buffer,
+ 		if (!(val & BCM2835_MBOX_STATUS_RD_EMPTY))
+ 			break;
+ 		if (is_timeout(starttime, TIMEOUT)) {
+-			printf("mbox: Timeout waiting for response\n");
++			pr_err("mbox: Timeout waiting for response\n");
+ 			return -ETIMEDOUT;
+ 		}
+ 	}
+ 
+ 	/* Read the response */
+ 	val = readl(mbox_base + MAIL0_RD);
+-	debug("mbox: RX raw: 0x%08x\n", val);
++	pr_debug("mbox: RX raw: 0x%08x\n", val);
+ 	dma_sync_single_for_cpu((unsigned long)send, buffer->buf_size,
+ 				DMA_BIDIRECTIONAL);
+ 
+ 	/* Validate the response */
+ 	if (BCM2835_MBOX_UNPACK_CHAN(val) != chan) {
+-		printf("mbox: Response channel mismatch\n");
++		pr_err("mbox: Response channel mismatch\n");
+ 		return -EIO;
+ 	}
+ 
+@@ -89,7 +91,7 @@ static int bcm2835_mbox_call_raw(u32 chan, struct bcm2835_mbox_hdr *buffer,
+ }
+ 
+ #ifdef DEBUG
+-void dump_buf(struct bcm2835_mbox_hdr *buffer)
++static void dump_buf(struct bcm2835_mbox_hdr *buffer)
+ {
+ 	u32 *p;
+ 	u32 words;
+@@ -98,7 +100,11 @@ void dump_buf(struct bcm2835_mbox_hdr *buffer)
+ 	p = (u32 *)buffer;
+ 	words = buffer->buf_size / 4;
+ 	for (i = 0; i < words; i++)
+-		printf("    0x%04x: 0x%08x\n", i * 4, p[i]);
++		pr_debug("    0x%04x: 0x%08x\n", i * 4, p[i]);
++}
++#else
++static void dump_buf(struct bcm2835_mbox_hdr *buffer)
++{
+ }
+ #endif
+ 
+@@ -109,27 +115,23 @@ int bcm2835_mbox_call_prop(u32 chan, struct bcm2835_mbox_hdr *buffer)
+ 	struct bcm2835_mbox_tag_hdr *tag;
+ 	int tag_index;
+ 
+-#ifdef DEBUG
+-	printf("mbox: TX buffer\n");
++	pr_debug("mbox: TX buffer\n");
+ 	dump_buf(buffer);
+-#endif
+ 
+ 	ret = bcm2835_mbox_call_raw(chan, buffer, &rbuffer);
+ 	if (ret)
+ 		return ret;
+ 	if (rbuffer != (u32)buffer) {
+-		printf("mbox: Response buffer mismatch\n");
++		pr_err("mbox: Response buffer mismatch\n");
+ 		return -EIO;
+ 	}
+ 
+-#ifdef DEBUG
+-	printf("mbox: RX buffer\n");
++	pr_debug("mbox: RX buffer\n");
+ 	dump_buf(buffer);
+-#endif
+ 
+ 	/* Validate overall response status */
+ 	if (buffer->code != BCM2835_MBOX_RESP_CODE_SUCCESS) {
+-		printf("mbox: Header response code invalid\n");
++		pr_err("mbox: Header response code invalid\n");
+ 		return -EIO;
+ 	}
+