From 23b5877c64562a314f8d8c60d0066cd346f2d886 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 9 Mar 2015 10:53:21 +0100 Subject: armv8/vexpress64: make multientry conditional While the Freescale ARMv8 board LS2085A will enter U-Boot both on a master and a secondary (slave) CPU, this is not the common behaviour on ARMv8 platforms. The norm is that U-Boot is entered from the master CPU only, while the other CPUs are kept in WFI (wait for interrupt) state. The code determining which CPU we are running on is using the MPIDR register, but the definition of that register varies with platform to some extent, and handling multi-cluster platforms (such as the Juno) will become cumbersome. It is better to only enable the multiple entry code on machines that actually need it and disable it by default. Make the single entry default and add a special ARMV8_MULTIENTRY KConfig option to be used by the platforms that need multientry and set it for the LS2085A. Delete all use of the CPU_RELEASE_ADDR from the Vexpress64 boards as it is just totally unused and misleading, and make it conditional in the generic start.S code. This makes the Juno platform start U-Boot properly. Signed-off-by: Linus Walleij --- board/armltd/vexpress64/vexpress64.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'board/armltd') diff --git a/board/armltd/vexpress64/vexpress64.c b/board/armltd/vexpress64/vexpress64.c index 20db812..de62864 100644 --- a/board/armltd/vexpress64/vexpress64.c +++ b/board/armltd/vexpress64/vexpress64.c @@ -22,12 +22,6 @@ int board_init(void) int dram_init(void) { - /* - * Clear spin table so that secondary processors - * observe the correct value after waken up from wfe. - */ - *(unsigned long *)CPU_RELEASE_ADDR = 0; - gd->ram_size = PHYS_SDRAM_1_SIZE; return 0; } -- cgit v1.1