From 5ffa88eca78b7260788b898b69b7d17d9508268f Mon Sep 17 00:00:00 2001 From: Liu Gang Date: Thu, 8 Mar 2012 00:33:17 +0000 Subject: powerpc/corenet_ds: Master module for boot from SRIO For the powerpc processors with SRIO interface, boot location can be configured from SRIO1 or SRIO2 by RCW. The processor booting from SRIO can do without flash for u-boot image. The image can be fetched from another processor's memory space by SRIO link connected between them. The processor boots from SRIO is slave, the processor boots from normal flash memory space and can help slave to boot from its memory space is master. They are different environments and requirements: master: 1. NOR flash for its own u-boot image, ucode and ENV space. 2. Slave's u-boot image in master NOR flash. 3. Normally boot from local NOR flash. 4. Configure SRIO switch system if needed. slave: 1. Just has EEPROM for RCW. No flash for u-boot image, ucode and ENV. 2. Boot location should be set to SRIO1 or SRIO2 by RCW. 3. RCW should configure the SerDes, SRIO interfaces correctly. 4. Slave must be powered on after master's boot. For the master module, need to finish these processes: 1. Initialize the SRIO port and address space. 2. Set inbound SRIO windows covered slave's u-boot image stored in master's NOR flash. 3. Master's u-boot image should be generated specifically by make xxxx_SRIOBOOT_MASTER_config 4. Master must boot first, and then slave can be powered on. Signed-off-by: Liu Gang Signed-off-by: Shaohui Xie --- arch/powerpc/include/asm/fsl_srio.h | 61 +++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 arch/powerpc/include/asm/fsl_srio.h (limited to 'arch/powerpc/include/asm/fsl_srio.h') diff --git a/arch/powerpc/include/asm/fsl_srio.h b/arch/powerpc/include/asm/fsl_srio.h new file mode 100644 index 0000000000..e4cd9b6544 --- /dev/null +++ b/arch/powerpc/include/asm/fsl_srio.h @@ -0,0 +1,61 @@ +/* + * Copyright 2011-2012 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _FSL_SRIO_H_ +#define _FSL_SRIO_H_ + +enum atmu_size { + ATMU_SIZE_4K = 0xb, + ATMU_SIZE_8K, + ATMU_SIZE_16K, + ATMU_SIZE_32K, + ATMU_SIZE_64K, + ATMU_SIZE_128K, + ATMU_SIZE_256K, + ATMU_SIZE_512K, + ATMU_SIZE_1M, + ATMU_SIZE_2M, + ATMU_SIZE_4M, + ATMU_SIZE_8M, + ATMU_SIZE_16M, + ATMU_SIZE_32M, + ATMU_SIZE_64M, + ATMU_SIZE_128M, + ATMU_SIZE_256M, + ATMU_SIZE_512M, + ATMU_SIZE_1G, + ATMU_SIZE_2G, + ATMU_SIZE_4G, + ATMU_SIZE_8G, + ATMU_SIZE_16G, + ATMU_SIZE_32G, + ATMU_SIZE_64G, +}; + +#define atmu_size_mask(sz) (__ilog2_u64(sz) - 1) +#define atmu_size_bytes(x) (1ULL << ((x & 0x3f) + 1)) + +extern void srio_init(void); +#ifdef CONFIG_SRIOBOOT_MASTER +extern void srio_boot_master(void); +#endif +#endif -- cgit v1.2.3 From 5056c8e068e30c73d3653f0b2cabbae46174a165 Mon Sep 17 00:00:00 2001 From: Liu Gang Date: Thu, 8 Mar 2012 00:33:21 +0000 Subject: powerpc/corenet_ds: Slave core in holdoff when boot from SRIO When boot from SRIO, slave's core can be in holdoff after powered on for some specific requirements. Master can release the slave's core at the right time by SRIO interface. Master needs to: 1. Set outbound SRIO windows in order to configure slave's registers for the core's releasing. 2. Check the SRIO port status when release slave core, if no errors, will implement the process of the slave core's releasing. Slave needs to: 1. Set all the cores in holdoff by RCW. 2. Be powered on before master's boot. Signed-off-by: Liu Gang Signed-off-by: Shaohui Xie --- arch/powerpc/cpu/mpc85xx/cpu_init.c | 3 + arch/powerpc/cpu/mpc8xxx/srio.c | 125 ++++++++++++++++++++++++++++++++++++ arch/powerpc/include/asm/fsl_srio.h | 3 + include/configs/corenet_ds.h | 4 ++ 4 files changed, 135 insertions(+) (limited to 'arch/powerpc/include/asm/fsl_srio.h') diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index 97a7fe1b97..2cd5db7c59 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -444,6 +444,9 @@ skip_l2: srio_init(); #ifdef CONFIG_SRIOBOOT_MASTER srio_boot_master(); +#ifdef CONFIG_SRIOBOOT_SLAVE_HOLDOFF + srio_boot_master_release_slave(); +#endif #endif #endif diff --git a/arch/powerpc/cpu/mpc8xxx/srio.c b/arch/powerpc/cpu/mpc8xxx/srio.c index 5694561eba..c7f394972b 100644 --- a/arch/powerpc/cpu/mpc8xxx/srio.c +++ b/arch/powerpc/cpu/mpc8xxx/srio.c @@ -25,6 +25,12 @@ #define SRIO_PORT_ACCEPT_ALL 0x10000001 #define SRIO_IB_ATMU_AR 0x80f55000 +#define SRIO_OB_ATMU_AR_MAINT 0x80077000 +#define SRIO_OB_ATMU_AR_RW 0x80045000 +#define SRIO_LCSBA1CSR_OFFSET 0x5c +#define SRIO_MAINT_WIN_SIZE 0x1000000 /* 16M */ +#define SRIO_RW_WIN_SIZE 0x100000 /* 1M */ +#define SRIO_LCSBA1CSR 0x60000000 #if defined(CONFIG_FSL_CORENET) #define _DEVDISR_SRIO1 FSL_CORENET_DEVDISR_SRIO1 @@ -168,4 +174,123 @@ void srio_boot_master(void) SRIO_IB_ATMU_AR | atmu_size_mask(CONFIG_SRIOBOOT_SLAVE_ENV_SIZE)); } + +#ifdef CONFIG_SRIOBOOT_SLAVE_HOLDOFF +void srio_boot_master_release_slave(void) +{ + struct ccsr_rio *srio = (void *)CONFIG_SYS_FSL_SRIO_ADDR; + u32 escsr; + debug("SRIOBOOT - MASTER: " + "Check the port status and release slave core ...\n"); + + escsr = in_be32((void *)&srio->lp_serial + .port[CONFIG_SRIOBOOT_MASTER_PORT].pescsr); + if (escsr & 0x2) { + if (escsr & 0x10100) { + debug("SRIOBOOT - MASTER: Port [ %d ] is error.\n", + CONFIG_SRIOBOOT_MASTER_PORT); + } else { + debug("SRIOBOOT - MASTER: " + "Port [ %d ] is ready, now release slave's core ...\n", + CONFIG_SRIOBOOT_MASTER_PORT); + /* + * configure outbound window + * with maintenance attribute to set slave's LCSBA1CSR + */ + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[1].rowtar, 0); + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[1].rowtear, 0); + if (CONFIG_SRIOBOOT_MASTER_PORT) + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[1].rowbar, + CONFIG_SYS_SRIO2_MEM_PHYS >> 12); + else + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[1].rowbar, + CONFIG_SYS_SRIO1_MEM_PHYS >> 12); + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[1].rowar, + SRIO_OB_ATMU_AR_MAINT + | atmu_size_mask(SRIO_MAINT_WIN_SIZE)); + + /* + * configure outbound window + * with R/W attribute to set slave's BRR + */ + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[2].rowtar, + SRIO_LCSBA1CSR >> 9); + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[2].rowtear, 0); + if (CONFIG_SRIOBOOT_MASTER_PORT) + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[2].rowbar, + (CONFIG_SYS_SRIO2_MEM_PHYS + + SRIO_MAINT_WIN_SIZE) >> 12); + else + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[2].rowbar, + (CONFIG_SYS_SRIO1_MEM_PHYS + + SRIO_MAINT_WIN_SIZE) >> 12); + out_be32((void *)&srio->atmu + .port[CONFIG_SRIOBOOT_MASTER_PORT] + .outbw[2].rowar, + SRIO_OB_ATMU_AR_RW + | atmu_size_mask(SRIO_RW_WIN_SIZE)); + + /* + * Set the LCSBA1CSR register in slave + * by the maint-outbound window + */ + if (CONFIG_SRIOBOOT_MASTER_PORT) { + out_be32((void *)CONFIG_SYS_SRIO2_MEM_VIRT + + SRIO_LCSBA1CSR_OFFSET, + SRIO_LCSBA1CSR); + while (in_be32((void *)CONFIG_SYS_SRIO2_MEM_VIRT + + SRIO_LCSBA1CSR_OFFSET) + != SRIO_LCSBA1CSR) + ; + /* + * And then set the BRR register + * to release slave core + */ + out_be32((void *)CONFIG_SYS_SRIO2_MEM_VIRT + + SRIO_MAINT_WIN_SIZE + + CONFIG_SRIOBOOT_SLAVE_BRR_OFFSET, + CONFIG_SRIOBOOT_SLAVE_RELEASE_MASK); + } else { + out_be32((void *)CONFIG_SYS_SRIO1_MEM_VIRT + + SRIO_LCSBA1CSR_OFFSET, + SRIO_LCSBA1CSR); + while (in_be32((void *)CONFIG_SYS_SRIO1_MEM_VIRT + + SRIO_LCSBA1CSR_OFFSET) + != SRIO_LCSBA1CSR) + ; + /* + * And then set the BRR register + * to release slave core + */ + out_be32((void *)CONFIG_SYS_SRIO1_MEM_VIRT + + SRIO_MAINT_WIN_SIZE + + CONFIG_SRIOBOOT_SLAVE_BRR_OFFSET, + CONFIG_SRIOBOOT_SLAVE_RELEASE_MASK); + } + debug("SRIOBOOT - MASTER: " + "Release slave successfully! Now the slave should start up!\n"); + } + } else + debug("SRIOBOOT - MASTER: Port [ %d ] is not ready.\n", + CONFIG_SRIOBOOT_MASTER_PORT); +} +#endif #endif diff --git a/arch/powerpc/include/asm/fsl_srio.h b/arch/powerpc/include/asm/fsl_srio.h index e4cd9b6544..a905a266c4 100644 --- a/arch/powerpc/include/asm/fsl_srio.h +++ b/arch/powerpc/include/asm/fsl_srio.h @@ -57,5 +57,8 @@ enum atmu_size { extern void srio_init(void); #ifdef CONFIG_SRIOBOOT_MASTER extern void srio_boot_master(void); +#ifdef CONFIG_SRIOBOOT_SLAVE_HOLDOFF +extern void srio_boot_master_release_slave(void); +#endif #endif #endif diff --git a/include/configs/corenet_ds.h b/include/configs/corenet_ds.h index aa8b384d66..8ed37a58c2 100644 --- a/include/configs/corenet_ds.h +++ b/include/configs/corenet_ds.h @@ -419,6 +419,10 @@ #define CONFIG_SRIOBOOT_SLAVE_ENV_LAW_PHYS 0xfef060000ull #define CONFIG_SRIOBOOT_SLAVE_ENV_SRIO_PHYS 0x3ffe20000ull #define CONFIG_SRIOBOOT_SLAVE_ENV_SIZE 0x20000 /* 128K */ +/* slave core release by master*/ +#define CONFIG_SRIOBOOT_SLAVE_HOLDOFF +#define CONFIG_SRIOBOOT_SLAVE_BRR_OFFSET 0xe00e4 +#define CONFIG_SRIOBOOT_SLAVE_RELEASE_MASK 0x00000001 /* release core 0 */ #endif /* -- cgit v1.2.3