bcm63xx: add kernel 5.10 support

Runtime-tested on Comtrend AR-5387un.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/target/linux/bcm63xx/patches-5.10/531-board_bcm6348-bt-voyager-2500v-bb.patch b/target/linux/bcm63xx/patches-5.10/531-board_bcm6348-bt-voyager-2500v-bb.patch
new file mode 100644
index 0000000000..39728c45e4
--- /dev/null
+++ b/target/linux/bcm63xx/patches-5.10/531-board_bcm6348-bt-voyager-2500v-bb.patch
@@ -0,0 +1,49 @@
+--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
++++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
+@@ -3230,6 +3230,22 @@ void __init board_bcm963xx_init(void)
+ 		val &= MPI_CSBASE_BASE_MASK;
+ 	}
+ 	boot_addr = (u8 *)KSEG1ADDR(val);
++	pr_info("Boot address 0x%08x\n",(unsigned int)boot_addr);
++
++	/* BT Voyager 2500V (RTA1046VW PCB) has 8 Meg flash used as two */
++	/* banks of 4 Meg. The byte at 0xBF800000 identifies the back to use.*/
++	/* Loading firmware from the CFE Prompt always loads to Bank 0 */
++	/* Do an early check of CFE and then select bank 0 */
++
++	if (boot_addr == (u8 *)0xbf800000) {
++		u8 *tmp_boot_addr = (u8*)0xbfc00000;
++
++		bcm63xx_nvram_init(tmp_boot_addr + BCM963XX_NVRAM_OFFSET);
++		if (!strcmp(bcm63xx_nvram_get_name(), "V2500V_BB")) {
++			pr_info("V2500V: nvram bank 0\n");
++			boot_addr = tmp_boot_addr;
++		}
++	}
+ 
+ 	/* dump cfe version */
+ 	cfe = boot_addr + BCM963XX_CFE_VERSION_OFFSET;
+--- a/arch/mips/bcm63xx/dev-flash.c
++++ b/arch/mips/bcm63xx/dev-flash.c
+@@ -21,6 +21,7 @@
+ #include <linux/spi/spi.h>
+ #include <linux/spi/flash.h>
+ 
++#include <bcm63xx_board.h>
+ #include <bcm63xx_cpu.h>
+ #include <bcm63xx_dev_flash.h>
+ #include <bcm63xx_regs.h>
+@@ -256,6 +257,13 @@ int __init bcm63xx_flash_register(void)
+ 			val = bcm_mpi_readl(MPI_CSBASE_REG(0));
+ 			val &= MPI_CSBASE_BASE_MASK;
+ 
++			/* BT Voyager 2500V has 8 Meg flash in two 4 Meg banks */
++			/* Loading from CFE always uses Bank 0 */
++			if (!strcmp(board_get_name(), "V2500V_BB")) {
++				pr_info("V2500V: Start in Bank 0\n");
++				val = val + 0x400000; // Select Bank 0 start address
++			}
++
+ 			mtd_resources[0].start = val;
+ 			mtd_resources[0].end = 0x1FFFFFFF;
+ 		}