Configure the PL310 address filter to make sure DRAM is mapped to 0x0.
This code also configures the "remap" register of NIC-301 and sets the
required 'mpuzero' bit.
Signed-off-by: Marek Vasut <ma...@denx.de>
Cc: Chin Liang See <cl...@altera.com>
Cc: Dinh Nguyen <dingu...@altera.com>
Cc: Albert Aribaud <albert.u.b...@aribaud.net>
Cc: Tom Rini <tr...@ti.com>
Cc: Wolfgang Denk <w...@denx.de>
Cc: Pavel Machek <pa...@denx.de>
---
arch/arm/cpu/armv7/socfpga/misc.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/cpu/armv7/socfpga/misc.c
b/arch/arm/cpu/armv7/socfpga/misc.c
index 8c30b61..d3e1150 100644
--- a/arch/arm/cpu/armv7/socfpga/misc.c
+++ b/arch/arm/cpu/armv7/socfpga/misc.c
@@ -12,11 +12,17 @@
#include <asm/arch/reset_manager.h>
#include <asm/arch/system_manager.h>
#include <asm/arch/dwmmc.h>
+#include <asm/arch/nic301.h>
+#include <asm/pl310.h>
DECLARE_GLOBAL_DATA_PTR;
+static struct pl310_regs *const pl310 =
+ (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
static struct socfpga_system_manager *sysmgr_regs =
(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
+static struct nic301_registers *nic301_regs =
+ (struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
int dram_init(void)
{
@@ -129,6 +135,14 @@ static inline void socfpga_fpga_add(void) {}
int misc_init_r(void)
{
+ /* Configure the L2 controller to make SDRAM start at 0 */
+#ifdef CONFIG_SOCFPGA_VIRTUAL_TARGET
+ writel(0x2, &nic301_regs->remap);
+#else
+ writel(0x1, &nic301_regs->remap); /* remap.mpuzero */
+ writel(0x1, &pl310->pl310_addr_filter_start);
+#endif
+
/* Add device descriptor to FPGA device table */
socfpga_fpga_add();
--
2.0.0
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