From: Pavel Machek Date: Mon, 8 Sep 2014 12:08:45 +0000 (+0200) Subject: arm: socfpga: nic301: Add NIC-301 configuration code X-Git-Tag: v2014.10-rc3~2^2~7 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=13e81d45f80b58e57a78daf6850d4f3a6bc20d9e;p=u-boot arm: socfpga: nic301: Add NIC-301 configuration code Add code which configures the AMBA NIC-301 and the SCU on the SoCFPGA . The code sets the access permissions for the CPU to the AMBA slaves such that the CPU can access them in both secure and non-secure mode. Signed-off-by: Marek Vasut Cc: Chin Liang See Cc: Dinh Nguyen Cc: Albert Aribaud Cc: Tom Rini Cc: Wolfgang Denk Cc: Pavel Machek --- diff --git a/arch/arm/cpu/armv7/socfpga/misc.c b/arch/arm/cpu/armv7/socfpga/misc.c index 0fc26c2b4c..76186c511b 100644 --- a/arch/arm/cpu/armv7/socfpga/misc.c +++ b/arch/arm/cpu/armv7/socfpga/misc.c @@ -13,6 +13,7 @@ #include #include #include +#include #include DECLARE_GLOBAL_DATA_PTR; @@ -23,6 +24,8 @@ 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; +static struct scu_registers *scu_regs = + (struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS; int dram_init(void) { @@ -146,8 +149,31 @@ int arch_cpu_init(void) return 0; } +/* + * Convert all NIC-301 AMBA slaves from secure to non-secure + */ +static void socfpga_nic301_slave_ns(void) +{ + writel(0x1, &nic301_regs->lwhps2fpgaregs); + writel(0x1, &nic301_regs->hps2fpgaregs); + writel(0x1, &nic301_regs->acp); + writel(0x1, &nic301_regs->rom); + writel(0x1, &nic301_regs->ocram); + writel(0x1, &nic301_regs->sdrdata); +} + int misc_init_r(void) { + socfpga_bridges_reset(1); + socfpga_nic301_slave_ns(); + + /* + * Private components security: + * U-Boot : configure private timer, global timer and cpu component + * access as non secure for kernel stage (as required by Linux) + */ + setbits_le32(&scu_regs->sacr, 0xfff); + /* Configure the L2 controller to make SDRAM start at 0 */ #ifdef CONFIG_SOCFPGA_VIRTUAL_TARGET writel(0x2, &nic301_regs->remap);