Pre u-boot Flow: 1. User loads the u-boot image in flash 2. PBL/Configuration word is used to create LAW for Flash at 0xc0000000 (Please note that ISBC expects all these addresses, images to be validated, entry point etc within 0 - 3.5G range) 3. ISBC validates the u-boot image, and passes control to u-boot at 0xcffffffc.
Changes in u-boot: 1. Temporarily map CONFIG_SYS_MONITOR_BASE to the 1M CONFIG_SYS_PBI_FLASH_WINDOW in AS=1. (The CONFIG_SYS_PBI_FLASH_WINDOW is the address map for the flash created by PBL/configuration word within 0 - 3.5G memory range. The u-boot image at this address has been validated by ISBC code) 2. Remove TLB entries for 0 - 3.5G created by ISBC code 3. Remove the LAW entry for the CONFIG_SYS_PBI_FLASH_WINDOW created by PBL/configuration word after switch to AS = 1
Signed-off-by: Ruchika Gupta ruchika.gupta@freescale.com Signed-off-by: Kuldip Giroh kuldip.giroh@freescale.com Acked-by: Wood Scott-B07421 B07421@freescale.com Signed-off-by: Kumar Gala galak@kernel.crashing.org --- arch/powerpc/cpu/mpc85xx/cpu_init.c | 11 +++++- arch/powerpc/cpu/mpc85xx/cpu_init_early.c | 10 +++++- arch/powerpc/cpu/mpc85xx/start.S | 55 +++++++++++++++++++++++++++- arch/powerpc/include/asm/fsl_secure_boot.h | 43 ++++++++++++++++++++++ arch/powerpc/include/asm/immap_85xx.h | 2 + boards.cfg | 1 + include/configs/corenet_ds.h | 4 ++ 7 files changed, 123 insertions(+), 3 deletions(-) create mode 100644 arch/powerpc/include/asm/fsl_secure_boot.h
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index 27f836c..e2c5b6f 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -226,7 +226,9 @@ void cpu_init_f (void) #ifdef CONFIG_SYS_DCSRBAR_PHYS ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); #endif - +#if defined(CONFIG_SECURE_BOOT) + struct law_entry law; +#endif #ifdef CONFIG_MPC8548 ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR); uint svr = get_svr(); @@ -244,6 +246,13 @@ void cpu_init_f (void) disable_tlb(14); disable_tlb(15);
+#if defined(CONFIG_SECURE_BOOT) + /* Disable the LAW created for NOR flash by the PBI commands */ + law = find_law(CONFIG_SYS_PBI_FLASH_BASE); + if (law.index != -1) + disable_law(law.index); +#endif + #ifdef CONFIG_CPM2 config_8560_ioports((ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR); #endif diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c index a04f5c1..4ef3c9a 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c @@ -1,5 +1,5 @@ /* - * Copyright 2009 Freescale Semiconductor, Inc + * Copyright 2009-2011 Freescale Semiconductor, Inc * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as @@ -149,5 +149,13 @@ void cpu_init_early_f(void) #endif
invalidate_tlb(1); + +#if defined(CONFIG_SECURE_BOOT) + /* Disable the TLBs created by ISBC */ + for (i = CONFIG_SYS_ISBC_START_TLB; + i < CONFIG_SYS_ISBC_START_TLB + CONFIG_SYS_ISBC_NUM_TLBS; i++) + disable_tlb(i); +#endif + init_tlbs(); } diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S index d89d18c..5e0d78d 100644 --- a/arch/powerpc/cpu/mpc85xx/start.S +++ b/arch/powerpc/cpu/mpc85xx/start.S @@ -83,6 +83,45 @@
_start_e500:
+#if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_E500MC) + /* ISBC uses L2 as stack. + * Disable L2 cache here so that u-boot can enable it later + * as part of it's normal flow + */ + + /* Check if L2 is enabled */ + mfspr r3, SPRN_L2CSR0 + lis r2, L2CSR0_L2E@h + ori r2, r2, L2CSR0_L2E@l + and. r4, r3, r2 + beq l2_disabled + + mfspr r3, SPRN_L2CSR0 + /* Flush L2 cache */ + lis r2,(L2CSR0_L2FL)@h + ori r2, r2, (L2CSR0_L2FL)@l + or r3, r2, r3 + sync + isync + mtspr SPRN_L2CSR0,r3 + isync +1: + mfspr r3, SPRN_L2CSR0 + and. r1, r3, r2 + bne 1b + + mfspr r3, SPRN_L2CSR0 + lis r2, L2CSR0_L2E@h + ori r2, r2, L2CSR0_L2E@l + andc r4, r3, r2 + sync + isync + mtspr SPRN_L2CSR0,r4 + isync + +l2_disabled: +#endif + /* clear registers/arrays not reset by hardware */
/* L1 */ @@ -516,7 +555,7 @@ create_init_ram_area: lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
-#ifndef CONFIG_SYS_RAMBOOT +#if !defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SECURE_BOOT) /* create a temp mapping in AS=1 to the 4M boot window */ lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@h ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@l @@ -527,6 +566,20 @@ create_init_ram_area: /* The 85xx has the default boot window 0xff800000 - 0xffffffff */ lis r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h ori r9,r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l +#elif !defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SECURE_BOOT) + /* create a temp mapping in AS = 1 for Flash mapping + * created by PBL for ISBC code + */ + lis r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@h + ori r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_1M)@l + + lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@h + ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_MONITOR_BASE, (MAS2_I|MAS2_G))@l + + lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_PBI_FLASH_WINDOW, 0, + (MAS3_SX|MAS3_SW|MAS3_SR))@h + ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_PBI_FLASH_WINDOW, 0, + (MAS3_SX|MAS3_SW|MAS3_SR))@l #else /* * create a temp mapping in AS=1 to the 1M CONFIG_SYS_MONITOR_BASE space, the main diff --git a/arch/powerpc/include/asm/fsl_secure_boot.h b/arch/powerpc/include/asm/fsl_secure_boot.h new file mode 100644 index 0000000..d1c1967 --- /dev/null +++ b/arch/powerpc/include/asm/fsl_secure_boot.h @@ -0,0 +1,43 @@ +/* + * Copyright 2010-2011 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_SECURE_BOOT_H +#define __FSL_SECURE_BOOT_H + +/* Starting TLB number for the TLB entried for 3.5 G space created by ISBC */ +#if defined(CONFIG_FSL_CORENET) +#define CONFIG_SYS_ISBC_START_TLB 3 +#else +#define CONFIG_SYS_ISBC_START_TLB 0 +#endif + +/* Number fo TLB's created by ISBC */ +#define CONFIG_SYS_ISBC_NUM_TLBS 5 + +#if defined(CONFIG_FSL_CORENET) +#define CONFIG_SYS_PBI_FLASH_BASE 0xc0000000 +#else +#define CONFIG_SYS_PBI_FLASH_BASE 0xce000000 +#endif +#define CONFIG_SYS_PBI_FLASH_WINDOW 0xcff80000 + +#endif diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h index 0dd57f3..135e2d8 100644 --- a/arch/powerpc/include/asm/immap_85xx.h +++ b/arch/powerpc/include/asm/immap_85xx.h @@ -2396,6 +2396,8 @@ typedef struct ccsr_usb_phy { #define CONFIG_SYS_MPC85xx_ESDHC_OFFSET 0x2e000 #define CONFIG_SYS_MPC85xx_SERDES2_OFFSET 0xE3100 #define CONFIG_SYS_MPC85xx_SERDES1_OFFSET 0xE3000 +#define CONFIG_SYS_SNVS_OFFSET 0xE6000 +#define CONFIG_SYS_SFP_OFFSET 0xE7000 #define CONFIG_SYS_MPC85xx_CPM_OFFSET 0x80000 #define CONFIG_SYS_FSL_QMAN_OFFSET 0x88000 #define CONFIG_SYS_FSL_BMAN_OFFSET 0x8a000 diff --git a/boards.cfg b/boards.cfg index 8bf69e3..dae858c 100644 --- a/boards.cfg +++ b/boards.cfg @@ -675,6 +675,7 @@ P3041DS_SDCARD powerpc mpc85xx corenet_ds freescale P3041DS_SPIFLASH powerpc mpc85xx corenet_ds freescale - P3041DS:RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF80000 P4080DS powerpc mpc85xx corenet_ds freescale P4080DS_SDCARD powerpc mpc85xx corenet_ds freescale - P4080DS:RAMBOOT_PBL,SDCARD,SYS_TEXT_BASE=0xFFF80000 +P4080DS_SECURE_BOOT powerpc mpc85xx corenet_ds freescale - P4080DS:SECURE_BOOT P4080DS_SPIFLASH powerpc mpc85xx corenet_ds freescale - P4080DS:RAMBOOT_PBL,SPIFLASH,SYS_TEXT_BASE=0xFFF80000 P5020DS powerpc mpc85xx corenet_ds freescale P5020DS_NAND powerpc mpc85xx corenet_ds freescale - P5020DS:RAMBOOT_PBL,NAND,SYS_TEXT_BASE=0xFFF80000 diff --git a/include/configs/corenet_ds.h b/include/configs/corenet_ds.h index 4f8c391..d5d0cd3 100644 --- a/include/configs/corenet_ds.h +++ b/include/configs/corenet_ds.h @@ -697,4 +697,8 @@
#define CONFIG_BOOTCOMMAND CONFIG_HDBOOT
+#ifdef CONFIG_SECURE_BOOT +#include <asm/fsl_secure_boot.h> +#endif + #endif /* __CONFIG_H */