EMIF FW: Configuring the EMIF firewall regions

EMIF FW configured for protecting these regions from L3 access from
initiators which are not defined

Change-Id: Ia2e92d21abdb2d824637480c0fac66fd39eeec61
Signed-off-by: Subash Lakkimsetti <x0091084@ti.com>

1 files changed, 120 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c
index b26984e26c..fd946b38c1 100644..100755
--- a/arch/arm/cpu/armv7/omap-common/emif-common.c
+++ b/arch/arm/cpu/armv7/omap-common/emif-common.c
@@ -18,6 +18,8 @@
 #include <asm/utils.h>
 #include <linux/compiler.h>
 
+int emif_fw_config(void);
+
 static int emif1_enabled = -1, emif2_enabled = -1;
 
 void set_lpmode_selfrefresh(u32 base)
@@ -1486,6 +1488,8 @@ void sdram_init(void)
         if (!in_sdram)
                 if (0 != secure_emif_reserve())
                         hang();
+        /*EMIF FW configuration for Robust RVC */
+        emif_fw_config();
 
         /* On HS devices, ensure static EMIF firewall APIs are locked */
         if (0 != secure_emif_firewall_lock())
@@ -1502,3 +1506,119 @@ void sdram_init(void)
 
         debug("<<sdram_init()\n");
 }
+
+
+/* EMIF Firewall setup for Robust RVC
+ *
+ * IPU2/IVA ==> DOMAIN 1
+ * DSP2_CFG/DSP2 MDMA  ==> DOMAIN 2
+ * VIP/VPE: DOMAIN 3
+ * DSS  ==> DOMAIN 4
+ * Rest of the initiators ==> DOMAIN 0
+ *
+ *ConnID 4 bit Initiator
+ *
+ *0x0 Cortex-A15 MPU subsystem
+ *0x1 DAP (P1500) module
+ *0x2 DSP1 (CFG, EDMA, MDMA), DSP2 (EDMA) subsystems
+ *0x3 IVAHD, DSP2 (CFG, MDMA)
+ *0x4 EVE 1/2
+ *0x6 IPU (IPU1 and IPU2); SDMA (System and Crypto)
+ *0x7 EDMA
+ *0x8 DSS (DSS1 and DSS2); MLB, MMU (MMU1 and MMU2), PCIE (PCIE1 and PCIE2)
+ *0x9 VIP 1/2/3, VPE
+ *0xA MMC (MMC1 and MMC2), GPU, SATA2, BB2D, GMAC
+ *0xB USB 1/2/3/4, HW INSTR
+ *0xC SATA
+ *0xD EVE 1/2 HW INSTR
+ *0xE to 0xF Reserved
+ */
+
+int emif_fw_config(void)
+{
+#if defined(CONFIG_TI_SECURE_DEVICE)
+
+        uint32_t accessPerm, initiatorPerm;
+
+        // Region 0: (Entire DDR) Provide write access to entire DDR 1.5G region
+        /*if  (0 != secure_emif_firewall_setup(0, 0x3, 0x80000000, 0x60000000, 0xffffffff, 0xffffffff))
+             printf("SDRAM Firewall: MPU_EMIF_FW Region 0 setting failed!\n");*/
+
+        /* Region 1: (IPU2 Code/Data reserved memory) Allow access to IPU2/IVA  only
+        * Address range for IPU2 CMA Pool 0x94000000 for size 0x05000000
+        */
+        accessPerm    = L3_ALL_PERMISSIONS
+                                        | L3_DOMAIN1_FUNCTIONAL
+                                        | L3_DOMAIN1_DEBUG;
+        initiatorPerm = FW_INITIATOR_IVA1
+                                        |FW_INITIATOR_DMA_IPU;
+
+        if (0 != secure_emif_firewall_setup(1, 0x1, 0x94000000, 0x05000000,
+                                                                                        accessPerm, initiatorPerm))
+        printf("SDRAM Firewall: EMIF_FW Region 1 setting failed!\n");
+
+        /* Region 2: (DSP2 Code/Data reserved memory) Allow access to  DSP2 only
+         * Address range for DSP2 CMA Pool 0x9f000000 for size 0x01000000
+         */
+
+        accessPerm      = L3_ALL_PERMISSIONS
+                                                | L3_DOMAIN2_FUNCTIONAL
+                                                | L3_DOMAIN2_DEBUG;
+        initiatorPerm   = FW_INITIATOR_IVA1
+                                                | FW_INITIATOR_DSP
+                                                | FW_INITIATOR_IVA1;
+
+        if (0 != secure_emif_firewall_setup(2, 0x1, 0x9f000000, 0x01000000,
+            accessPerm, initiatorPerm))
+        printf("SDRAM Firewall: EMIF_FW Region 2 setting failed!\n");
+
+        /* Region 3: (SR1 FRAME BUFFER MEM RVC pool1) Allow access to  IPU2/DSP2, VIP/VPE & DSS Read only for EMIF FW
+        *  Address  for RVC Pool1 0x84000000 for size 0x10000000
+        */
+
+        accessPerm      = L3_ALL_PERMISSIONS
+                                                | L3_DOMAIN1_FUNCTIONAL
+                                                | L3_DOMAIN1_DEBUG
+                                                | L3_DOMAIN2_FUNCTIONAL
+                                                | L3_DOMAIN2_DEBUG
+                                                | L3_DOMAIN3_FUNCTIONAL
+                                                | L3_DOMAIN3_DEBUG
+                                                | L3_DOMAIN4_FUNCTIONAL
+                                                | L3_DOMAIN4_DEBUG;
+        initiatorPerm = FW_INITIATOR_IVA1
+                                                | FW_INITIATOR_IVA1
+                                                | FW_INITIATOR_DMA_IPU
+                                                | FW_INITIATOR_DSS
+                                                | FW_INITIATOR_VIP;
+
+        if (0 != secure_emif_firewall_setup(3, 0x1, 0x84000000, 0x10000000,
+                                                        accessPerm, initiatorPerm))
+         printf("SDRAM Firewall: EMIF_FW Region 3 setting failed!\n");
+
+        /* Region 4: (MEM RVC pool2) Allow access to  IPU2/DSP2, VIP/VPE & DSS Read only for EMIF FW
+        * Address  for RVC Pool2 0xA0000000 for size 0x02000000
+        */
+        accessPerm      = L3_ALL_PERMISSIONS
+                                                | L3_DOMAIN1_FUNCTIONAL
+                                                | L3_DOMAIN1_DEBUG
+                                                | L3_DOMAIN2_FUNCTIONAL
+                                                | L3_DOMAIN2_DEBUG
+                                                | L3_DOMAIN3_FUNCTIONAL
+                                                | L3_DOMAIN3_DEBUG
+                                                | L3_DOMAIN4_FUNCTIONAL
+                                                | L3_DOMAIN4_DEBUG;
+        initiatorPerm = FW_INITIATOR_IVA1
+                                                | FW_INITIATOR_IVA1
+                                                | FW_INITIATOR_DMA_IPU
+                                                | FW_INITIATOR_DSS
+                                                | FW_INITIATOR_VIP;
+
+        if (0 != secure_emif_firewall_setup(4, 0x1, 0xA0000000, 0x02000000,
+                                                        accessPerm, initiatorPerm))
+         printf("SDRAM Firewall: EMIF_FW Region 4 setting failed!\n");
+
+#endif
+
+        return 0;
+
+}