brcm63xx: add linux 4.19 support

Boot tested on Comtrend AR-5387un:
https://gist.github.com/Noltari/57e5030455da8dc38e61f8c3a5922254

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
[jonas.gorski: make 4.19 an optional testing version; add gcc 8.3 fix]
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/patches-4.19/357-MIPS-BCM63XX-use-platform-data-for-the-sprom.patch b/target/linux/brcm63xx/patches-4.19/357-MIPS-BCM63XX-use-platform-data-for-the-sprom.patch
new file mode 100644
index 0000000000..d0e37efd53
--- /dev/null
+++ b/target/linux/brcm63xx/patches-4.19/357-MIPS-BCM63XX-use-platform-data-for-the-sprom.patch
@@ -0,0 +1,95 @@
+From 9912a8b3c240a9b0af01ff496b7e8ed9e4cc5b82 Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Tue, 29 Jul 2014 21:43:49 +0200
+Subject: [PATCH 02/10] MIPS: BCM63XX: use platform data for the sprom
+
+Similar to ethernet setup, use a platform data struct for passing
+the mac. This eliminates the requirement to allocate an array on
+stack for the mac passed.
+
+Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+---
+ arch/mips/bcm63xx/boards/board_common.c                     | 6 ++----
+ arch/mips/bcm63xx/sprom.c                                   | 8 ++++----
+ arch/mips/include/asm/mach-bcm63xx/bcm63xx_fallback_sprom.h | 8 +++++++-
+ arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h         | 4 ++++
+ 4 files changed, 17 insertions(+), 9 deletions(-)
+
+--- a/arch/mips/bcm63xx/boards/board_common.c
++++ b/arch/mips/bcm63xx/boards/board_common.c
+@@ -141,7 +141,6 @@ static struct platform_device bcm63xx_gp
+ int __init board_register_devices(void)
+ {
+ 	int usbh_ports = 0;
+-	u8 mac[ETH_ALEN];
+ 
+ 	if (board.has_uart0)
+ 		bcm63xx_uart_register(0);
+@@ -184,8 +183,8 @@ int __init board_register_devices(void)
+ 	 * do this after registering enet devices
+ 	 */
+ 
+-	if (board_get_mac_address(mac) ||
+-	    bcm63xx_register_fallback_sprom(mac))
++	if (board_get_mac_address(board.fallback_sprom.mac_addr) ||
++	    bcm63xx_register_fallback_sprom(&board.fallback_sprom))
+ 		pr_err(PFX "failed to register fallback SPROM\n");
+ 
+ 	bcm63xx_spi_register();
+--- a/arch/mips/bcm63xx/sprom.c
++++ b/arch/mips/bcm63xx/sprom.c
+@@ -55,14 +55,14 @@ int bcm63xx_get_fallback_sprom(struct ss
+ }
+ #endif
+ 
+-int __init bcm63xx_register_fallback_sprom(u8 *mac)
++int __init bcm63xx_register_fallback_sprom(struct fallback_sprom_data *data)
+ {
+ 	int ret = 0;
+ 
+ #ifdef CONFIG_SSB_PCIHOST
+-	memcpy(bcm63xx_sprom.il0mac, mac, ETH_ALEN);
+-	memcpy(bcm63xx_sprom.et0mac, mac, ETH_ALEN);
+-	memcpy(bcm63xx_sprom.et1mac, mac, ETH_ALEN);
++	memcpy(bcm63xx_sprom.il0mac, data->mac_addr, ETH_ALEN);
++	memcpy(bcm63xx_sprom.et0mac, data->mac_addr, ETH_ALEN);
++	memcpy(bcm63xx_sprom.et1mac, data->mac_addr, ETH_ALEN);
+ 
+ 	ret = ssb_arch_register_fallback_sprom(&bcm63xx_get_fallback_sprom);
+ #endif
+--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_fallback_sprom.h
++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_fallback_sprom.h
+@@ -1,6 +1,12 @@
+ #ifndef __BCM63XX_FALLBACK_SPROM
+ #define __BCM63XX_FALLBACK_SPROM
+ 
+-int bcm63xx_register_fallback_sprom(u8 *mac);
++#include <linux/if_ether.h>
++
++struct fallback_sprom_data {
++	u8 mac_addr[ETH_ALEN];
++};
++
++int bcm63xx_register_fallback_sprom(struct fallback_sprom_data *data);
+ 
+ #endif
+--- a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
++++ b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
+@@ -7,6 +7,7 @@
+ #include <linux/leds.h>
+ #include <bcm63xx_dev_enet.h>
+ #include <bcm63xx_dev_usb_usbd.h>
++#include <bcm63xx_fallback_sprom.h>
+ 
+ /*
+  * flash mapping
+@@ -50,6 +51,9 @@ struct board_info {
+ 
+ 	/* External PHY reset GPIO flags from gpio.h */
+ 	unsigned long ephy_reset_gpio_flags;
++
++	/* fallback sprom config */
++	struct fallback_sprom_data fallback_sprom;
+ };
+ 
+ #endif /* ! BOARD_BCM963XX_H_ */