powerpc/b4860qds: Slave module for boot from SRIO and PCIE

When a b4860qds board boots from SRIO or PCIE, it needs to finish these
processes:
	1. Set all the cores in holdoff status.
	2. Set the boot location to one PCIE or SRIO interface by RCW.
	3. Set a specific TLB entry for the boot process.
	4. Set a LAW entry with the TargetID of one PCIE or SRIO for the boot.
	5. Set a specific TLB entry in order to fetch ucode and ENV from
	   master.
	6. Set a LAW entry with the TargetID one of the PCIE ports for
	   ucode and ENV.
	7. Slave's u-boot image should be generated specifically by
	   make xxxx_SRIO_PCIE_BOOT_config.
	   This will set SYS_TEXT_BASE=0xFFF80000 and other configurations.

For more information about the feature of Boot from SRIO/PCIE, please
refer to the document doc/README.srio-pcie-boot-corenet.

Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

4 files changed, 48 insertions, 5 deletions

diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h
index 77f1114..8545a0c 100644
--- a/arch/powerpc/include/asm/immap_85xx.h
+++ b/arch/powerpc/include/asm/immap_85xx.h
@@ -1844,6 +1844,7 @@ typedef struct ccsr_gur {
 #define FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT	25
 #define FSL_CORENET2_RCWSR4_SRDS2_PRTCL	0x00ff0000
 #define FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT	16
+#define FSL_CORENET_RCWSR6_BOOT_LOC	0x0f800000
 #elif defined(CONFIG_PPC_T1040)
 #define FSL_CORENET2_RCWSR4_SRDS1_PRTCL	0xff000000
 #define FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT	24
diff --git a/board/freescale/b4860qds/tlb.c b/board/freescale/b4860qds/tlb.c
index 29cc41b..1416f98 100644
--- a/board/freescale/b4860qds/tlb.c
+++ b/board/freescale/b4860qds/tlb.c
@@ -52,6 +52,15 @@ struct fsl_e_tlb_entry tlb_table[] = {
 	SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L3_ADDR, CONFIG_SYS_INIT_L3_ADDR,
 			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 			0, 0, BOOKE_PAGESZ_1M, 1),
+#elif defined(CONFIG_SRIO_PCIE_BOOT_SLAVE)
+	/*
+	 * SRIO_PCIE_BOOT-SLAVE. When slave boot, the address of the
+	 * space is at 0xfff00000, it covered the 0xfffff000.
+	 */
+	SET_TLB_ENTRY(1, CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR,
+		      CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR_PHYS,
+		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_W|MAS2_G,
+		      0, 0, BOOKE_PAGESZ_1M, 1),
 #else
 	SET_TLB_ENTRY(1, 0xfffff000, 0xfffff000,
 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
@@ -137,6 +146,16 @@ struct fsl_e_tlb_entry tlb_table[] = {
 		MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		      0, 16, BOOKE_PAGESZ_256M, 1),
 #endif
+#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
+	/*
+	 * SRIO_PCIE_BOOT-SLAVE. 1M space from 0xffe00000 for
+	 * fetching ucode and ENV from master
+	 */
+	SET_TLB_ENTRY(1, CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR,
+		      CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR_PHYS,
+		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_G,
+		      0, 17, BOOKE_PAGESZ_1M, 1),
+#endif
 };
 
 int num_tlb_entries = ARRAY_SIZE(tlb_table);
diff --git a/boards.cfg b/boards.cfg
index ef9521f..009e896 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -923,6 +923,7 @@ T4160QDS_SPIFLASH            powerpc     mpc85xx     t4qds               freesca
 B4860QDS                     powerpc     mpc85xx     b4860qds            freescale      -           B4860QDS:PPC_B4860
 B4860QDS_NAND		     powerpc     mpc85xx     b4860qds            freescale      -           B4860QDS:PPC_B4860,RAMBOOT_PBL,NAND,SYS_TEXT_BASE=0xFFF80000
 B4860QDS_SPIFLASH            powerpc     mpc85xx     b4860qds            freescale	-           B4860QDS:PPC_B4860,RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF80000
+B4860QDS_SRIO_PCIE_BOOT	     powerpc     mpc85xx     b4860qds            freescale      -           B4860QDS:PPC_B4860,SRIO_PCIE_BOOT_SLAVE,SYS_TEXT_BASE=0xFFF80000
 B4420QDS                     powerpc     mpc85xx     b4860qds            freescale	-	    B4860QDS:PPC_B4420
 B4420QDS_NAND		     powerpc     mpc85xx     b4860qds            freescale      -           B4860QDS:PPC_B4420,RAMBOOT_PBL,NAND,SYS_TEXT_BASE=0xFFF80000
 B4420QDS_SPIFLASH            powerpc     mpc85xx     b4860qds            freescale	-           B4860QDS:PPC_B4420,RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF80000
diff --git a/include/configs/B4860QDS.h b/include/configs/B4860QDS.h
index a94555a..b45001a 100644
--- a/include/configs/B4860QDS.h
+++ b/include/configs/B4860QDS.h
@@ -34,6 +34,15 @@
 #define CONFIG_RESET_VECTOR_ADDRESS	0xfffffffc
 #endif
 
+#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
+/* Set 1M boot space */
+#define CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR (CONFIG_SYS_TEXT_BASE & 0xfff00000)
+#define CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR_PHYS \
+		(0x300000000ull | CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR)
+#define CONFIG_RESET_VECTOR_ADDRESS 0xfffffffc
+#define CONFIG_SYS_NO_FLASH
+#endif
+
 /* High Level Configuration Options */
 #define CONFIG_BOOKE
 #define CONFIG_E500			/* BOOKE e500 family */
@@ -85,14 +94,15 @@
 #define CONFIG_ENV_OVERWRITE
 
 #ifdef CONFIG_SYS_NO_FLASH
+#if !defined(CONFIG_SRIO_PCIE_BOOT_SLAVE) && !defined(CONFIG_RAMBOOT_PBL)
 #define CONFIG_ENV_IS_NOWHERE
+#endif
 #else
 #define CONFIG_FLASH_CFI_DRIVER
 #define CONFIG_SYS_FLASH_CFI
 #define CONFIG_SYS_FLASH_USE_BUFFER_WRITE
 #endif
 
-#ifndef CONFIG_SYS_NO_FLASH
 #if defined(CONFIG_SPIFLASH)
 #define CONFIG_SYS_EXTRA_ENV_RELOC
 #define CONFIG_ENV_IS_IN_SPI_FLASH
@@ -114,16 +124,18 @@
 #define CONFIG_ENV_IS_IN_NAND
 #define CONFIG_ENV_SIZE			CONFIG_SYS_NAND_BLOCK_SIZE
 #define CONFIG_ENV_OFFSET		(5 * CONFIG_SYS_NAND_BLOCK_SIZE)
+#elif defined(CONFIG_SRIO_PCIE_BOOT_SLAVE)
+#define CONFIG_ENV_IS_IN_REMOTE
+#define CONFIG_ENV_ADDR		0xffe20000
+#define CONFIG_ENV_SIZE		0x2000
+#elif defined(CONFIG_ENV_IS_NOWHERE)
+#define CONFIG_ENV_SIZE		0x2000
 #else
 #define CONFIG_ENV_IS_IN_FLASH
 #define CONFIG_ENV_ADDR		(CONFIG_SYS_MONITOR_BASE - CONFIG_ENV_SECT_SIZE)
 #define CONFIG_ENV_SIZE		0x2000
 #define CONFIG_ENV_SECT_SIZE	0x20000 /* 128K (one sector) */
 #endif
-#else /* CONFIG_SYS_NO_FLASH */
-#define CONFIG_ENV_SIZE                0x2000
-#define CONFIG_ENV_SECT_SIZE   0x20000 /* 128K (one sector) */
-#endif
 
 #ifndef __ASSEMBLY__
 unsigned long get_board_sys_clk(void);
@@ -601,6 +613,16 @@ unsigned long get_board_ddr_clk(void);
 #elif defined(CONFIG_NAND)
 #define CONFIG_SYS_QE_FMAN_FW_IN_NAND
 #define CONFIG_SYS_QE_FMAN_FW_ADDR	(6 * CONFIG_SYS_NAND_BLOCK_SIZE)
+#elif defined(CONFIG_SRIO_PCIE_BOOT_SLAVE)
+/*
+ * Slave has no ucode locally, it can fetch this from remote. When implementing
+ * in two corenet boards, slave's ucode could be stored in master's memory
+ * space, the address can be mapped from slave TLB->slave LAW->
+ * slave SRIO or PCIE outbound window->master inbound window->
+ * master LAW->the ucode address in master's memory space.
+ */
+#define CONFIG_SYS_QE_FMAN_FW_IN_REMOTE
+#define CONFIG_SYS_QE_FMAN_FW_ADDR	0xFFE00000
 #else
 #define CONFIG_SYS_QE_FMAN_FW_IN_NOR
 #define CONFIG_SYS_QE_FMAN_FW_ADDR		0xEFF40000