diff options
| -rw-r--r-- | arch/arm/cpu/arm926ejs/orion5x/cpu.c | 78 | ||||
| -rw-r--r-- | arch/arm/cpu/arm926ejs/orion5x/timer.c | 6 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-orion5x/cpu.h | 1 |
3 files changed, 54 insertions, 31 deletions
diff --git a/arch/arm/cpu/arm926ejs/orion5x/cpu.c b/arch/arm/cpu/arm926ejs/orion5x/cpu.c index 260f88b..c36d7bf 100644 --- a/arch/arm/cpu/arm926ejs/orion5x/cpu.c +++ b/arch/arm/cpu/arm926ejs/orion5x/cpu.c @@ -77,6 +77,17 @@ unsigned int orion5x_winctrl_calcsize(unsigned int sizeval) * * If remap function not used, remap_lo must be set as base * + * NOTES: + * + * 1) in order to avoid windows with inconsistent control and base values + * (which could prevent access to BOOTCS and hence execution from FLASH) + * always disable window before writing the base value then reenable it + * by writing the control value. + * + * 2) in order to avoid losing access to BOOTCS when disabling window 7, + * first configure window 6 for BOOTCS, then configure window 7 for BOOTCS, + * then configure windows 6 for its own target. + * * Reference Documentation: * Mbus-L to Mbus Bridge Registers Configuration. * (Sec 25.1 and 25.3 of Datasheet) @@ -86,57 +97,64 @@ int orion5x_config_adr_windows(void) struct orion5x_win_registers *winregs = (struct orion5x_win_registers *)ORION5X_CPU_WIN_BASE; - /* Window 0: PCIE MEM address space */ - writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCIE_MEM, - ORION5X_TARGET_PCIE, ORION5X_ATTR_PCIE_MEM, - ORION5X_WIN_ENABLE), &winregs[0].ctrl); +/* Disable window 0, configure it for its intended target, enable it. */ + writel(0, &winregs[0].ctrl); writel(ORION5X_ADR_PCIE_MEM, &winregs[0].base); writel(ORION5X_ADR_PCIE_MEM_REMAP_LO, &winregs[0].remap_lo); writel(ORION5X_ADR_PCIE_MEM_REMAP_HI, &winregs[0].remap_hi); - - /* Window 1: PCIE IO address space */ - writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCIE_IO, - ORION5X_TARGET_PCIE, ORION5X_ATTR_PCIE_IO, - ORION5X_WIN_ENABLE), &winregs[1].ctrl); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCIE_MEM, + ORION5X_TARGET_PCIE, ORION5X_ATTR_PCIE_MEM, + ORION5X_WIN_ENABLE), &winregs[0].ctrl); +/* Disable window 1, configure it for its intended target, enable it. */ + writel(0, &winregs[1].ctrl); writel(ORION5X_ADR_PCIE_IO, &winregs[1].base); writel(ORION5X_ADR_PCIE_IO_REMAP_LO, &winregs[1].remap_lo); writel(ORION5X_ADR_PCIE_IO_REMAP_HI, &winregs[1].remap_hi); - - /* Window 2: PCI MEM address space */ + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCIE_IO, + ORION5X_TARGET_PCIE, ORION5X_ATTR_PCIE_IO, + ORION5X_WIN_ENABLE), &winregs[1].ctrl); +/* Disable window 2, configure it for its intended target, enable it. */ + writel(0, &winregs[2].ctrl); + writel(ORION5X_ADR_PCI_MEM, &winregs[2].base); writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCI_MEM, ORION5X_TARGET_PCI, ORION5X_ATTR_PCI_MEM, ORION5X_WIN_ENABLE), &winregs[2].ctrl); - writel(ORION5X_ADR_PCI_MEM, &winregs[2].base); - - /* Window 3: PCI IO address space */ +/* Disable window 3, configure it for its intended target, enable it. */ + writel(0, &winregs[3].ctrl); + writel(ORION5X_ADR_PCI_IO, &winregs[3].base); writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_PCI_IO, ORION5X_TARGET_PCI, ORION5X_ATTR_PCI_IO, ORION5X_WIN_ENABLE), &winregs[3].ctrl); - writel(ORION5X_ADR_PCI_IO, &winregs[3].base); - - /* Window 4: DEV_CS0 address space */ +/* Disable window 4, configure it for its intended target, enable it. */ + writel(0, &winregs[4].ctrl); + writel(ORION5X_ADR_DEV_CS0, &winregs[4].base); writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_DEV_CS0, ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS0, ORION5X_WIN_ENABLE), &winregs[4].ctrl); - writel(ORION5X_ADR_DEV_CS0, &winregs[4].base); - - /* Window 5: DEV_CS1 address space */ +/* Disable window 5, configure it for its intended target, enable it. */ + writel(0, &winregs[5].ctrl); + writel(ORION5X_ADR_DEV_CS1, &winregs[5].base); writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_DEV_CS1, ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS1, ORION5X_WIN_ENABLE), &winregs[5].ctrl); - writel(ORION5X_ADR_DEV_CS1, &winregs[5].base); - - /* Window 6: DEV_CS2 address space */ - writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_DEV_CS2, - ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS2, +/* Disable window 6, configure it for FLASH, enable it. */ + writel(0, &winregs[6].ctrl); + writel(ORION5X_ADR_BOOTROM, &winregs[6].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_BOOTROM, + ORION5X_TARGET_DEVICE, ORION5X_ATTR_BOOTROM, ORION5X_WIN_ENABLE), &winregs[6].ctrl); - writel(ORION5X_ADR_DEV_CS2, &winregs[6].base); - - /* Window 7: BOOT Memory address space */ +/* Disable window 7, configure it for FLASH, enable it. */ + writel(0, &winregs[7].ctrl); + writel(ORION5X_ADR_BOOTROM, &winregs[7].base); writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_BOOTROM, ORION5X_TARGET_DEVICE, ORION5X_ATTR_BOOTROM, ORION5X_WIN_ENABLE), &winregs[7].ctrl); - writel(ORION5X_ADR_BOOTROM, &winregs[7].base); +/* Disable window 6, configure it for its intended target, enable it. */ + writel(0, &winregs[6].ctrl); + writel(ORION5X_ADR_DEV_CS2, &winregs[6].base); + writel(ORION5X_CPU_WIN_CTRL_DATA(ORION5X_SZ_DEV_CS2, + ORION5X_TARGET_DEVICE, ORION5X_ATTR_DEV_CS2, + ORION5X_WIN_ENABLE), &winregs[6].ctrl); return 0; } @@ -265,6 +283,8 @@ int arch_misc_init(void) writel(ORION5X_MPP16_23, ORION5X_MPP_BASE+0x50); writel(ORION5X_GPIO_OUT_ENABLE, ORION5X_GPIO_BASE+0x04); + /* initialize timer */ + timer_init_r(); return 0; } #endif /* CONFIG_ARCH_MISC_INIT */ diff --git a/arch/arm/cpu/arm926ejs/orion5x/timer.c b/arch/arm/cpu/arm926ejs/orion5x/timer.c index 115448f..089ef47 100644 --- a/arch/arm/cpu/arm926ejs/orion5x/timer.c +++ b/arch/arm/cpu/arm926ejs/orion5x/timer.c @@ -173,9 +173,11 @@ int timer_init(void) cntmrctrl |= CTCR_ARM_TIMER_EN(UBOOT_CNTR); cntmrctrl |= CTCR_ARM_TIMER_AUTO_EN(UBOOT_CNTR); writel(cntmrctrl, CNTMR_CTRL_REG); + return 0; +} +void timer_init_r(void) +{ /* init the timestamp and lastdec value */ reset_timer_masked(); - - return 0; } diff --git a/arch/arm/include/asm/arch-orion5x/cpu.h b/arch/arm/include/asm/arch-orion5x/cpu.h index 6ce02a9..c84efaf 100644 --- a/arch/arm/include/asm/arch-orion5x/cpu.h +++ b/arch/arm/include/asm/arch-orion5x/cpu.h @@ -255,5 +255,6 @@ void reset_cpu(unsigned long ignored); u32 orion5x_device_id(void); u32 orion5x_device_rev(void); unsigned int orion5x_winctrl_calcsize(unsigned int sizeval); +void timer_init_r(void); #endif /* __ASSEMBLY__ */ #endif /* _ORION5X_CPU_H */ |