In case where ps-ddr is not used, do not remap OCM to high address and keep it from 0x0. Linux SMP requires to have memory at 0x0.
Signed-off-by: Michal Simek michal.simek@xilinx.com --- arch/arm/cpu/armv7/zynq/cpu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/armv7/zynq/cpu.c b/arch/arm/cpu/armv7/zynq/cpu.c index 2bb3843..0ca5d8a 100644 --- a/arch/arm/cpu/armv7/zynq/cpu.c +++ b/arch/arm/cpu/armv7/zynq/cpu.c @@ -16,13 +16,15 @@ void lowlevel_init(void) int arch_cpu_init(void) { zynq_slcr_unlock(); - /* remap DDR to zero, FILTERSTART */ - writel(0, &scu_base->filter_start);
/* Device config APB, unlock the PCAP */ writel(0x757BDF0D, &devcfg_base->unlock); writel(0xFFFFFFFF, &devcfg_base->rom_shadow);
+#if (CONFIG_SYS_SDRAM_BASE == 0) + /* remap DDR to zero, FILTERSTART */ + writel(0, &scu_base->filter_start); + /* OCM_CFG, Mask out the ROM, map ram into upper addresses */ writel(0x1F, &slcr_base->ocm_cfg); /* FPGA_RST_CTRL, clear resets on AXI fabric ports */ @@ -33,6 +35,7 @@ int arch_cpu_init(void) writel(0x0, &slcr_base->ddr_urgent_sel); /* Urgent write, ports S2/S3 */ writel(0xC, &slcr_base->ddr_urgent); +#endif
zynq_slcr_lock();
-- 1.8.2.3