diff options
Diffstat (limited to 'arch/arm/mach-omap2/control.c')
| -rw-r--r-- | arch/arm/mach-omap2/control.c | 385 |
1 files changed, 383 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c index 5f3aad977842..cdd1f35636dd 100644 --- a/arch/arm/mach-omap2/control.c +++ b/arch/arm/mach-omap2/control.c @@ -15,11 +15,127 @@ #include <linux/kernel.h> #include <linux/io.h> -#include <mach/common.h> -#include <mach/control.h> +#include <plat/common.h> +#include <plat/control.h> +#include <plat/sdrc.h> +#include "cm-regbits-34xx.h" +#include "prm-regbits-34xx.h" +#include "cm.h" +#include "prm.h" +#include "sdrc.h" static void __iomem *omap2_ctrl_base; +#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) +struct omap3_scratchpad { + u32 boot_config_ptr; + u32 public_restore_ptr; + u32 secure_ram_restore_ptr; + u32 sdrc_module_semaphore; + u32 prcm_block_offset; + u32 sdrc_block_offset; +}; + +struct omap3_scratchpad_prcm_block { + u32 prm_clksrc_ctrl; + u32 prm_clksel; + u32 cm_clksel_core; + u32 cm_clksel_wkup; + u32 cm_clken_pll; + u32 cm_autoidle_pll; + u32 cm_clksel1_pll; + u32 cm_clksel2_pll; + u32 cm_clksel3_pll; + u32 cm_clken_pll_mpu; + u32 cm_autoidle_pll_mpu; + u32 cm_clksel1_pll_mpu; + u32 cm_clksel2_pll_mpu; + u32 prcm_block_size; +}; + +struct omap3_scratchpad_sdrc_block { + u16 sysconfig; + u16 cs_cfg; + u16 sharing; + u16 err_type; + u32 dll_a_ctrl; + u32 dll_b_ctrl; + u32 power; + u32 cs_0; + u32 mcfg_0; + u16 mr_0; + u16 emr_1_0; + u16 emr_2_0; + u16 emr_3_0; + u32 actim_ctrla_0; + u32 actim_ctrlb_0; + u32 rfr_ctrl_0; + u32 cs_1; + u32 mcfg_1; + u16 mr_1; + u16 emr_1_1; + u16 emr_2_1; + u16 emr_3_1; + u32 actim_ctrla_1; + u32 actim_ctrlb_1; + u32 rfr_ctrl_1; + u16 dcdl_1_ctrl; + u16 dcdl_2_ctrl; + u32 flags; + u32 block_size; +}; + +void *omap3_secure_ram_storage; + +/* + * This is used to store ARM registers in SDRAM before attempting + * an MPU OFF. The save and restore happens from the SRAM sleep code. + * The address is stored in scratchpad, so that it can be used + * during the restore path. + */ +u32 omap3_arm_context[128]; + +struct omap3_control_regs { + u32 sysconfig; + u32 devconf0; + u32 mem_dftrw0; + u32 mem_dftrw1; + u32 msuspendmux_0; + u32 msuspendmux_1; + u32 msuspendmux_2; + u32 msuspendmux_3; + u32 msuspendmux_4; + u32 msuspendmux_5; + u32 sec_ctrl; + u32 devconf1; + u32 csirxfe; + u32 iva2_bootaddr; + u32 iva2_bootmod; + u32 debobs_0; + u32 debobs_1; + u32 debobs_2; + u32 debobs_3; + u32 debobs_4; + u32 debobs_5; + u32 debobs_6; + u32 debobs_7; + u32 debobs_8; + u32 prog_io0; + u32 prog_io1; + u32 dss_dpll_spreading; + u32 core_dpll_spreading; + u32 per_dpll_spreading; + u32 usbhost_dpll_spreading; + u32 pbias_lite; + u32 temp_sensor; + u32 sramldo4; + u32 sramldo5; + u32 csi; +}; + +static struct omap3_control_regs control_context; +#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */ + #define OMAP_CTRL_REGADDR(reg) (omap2_ctrl_base + (reg)) void __init omap2_set_globals_control(struct omap_globals *omap2_globals) @@ -62,3 +178,268 @@ void omap_ctrl_writel(u32 val, u16 offset) __raw_writel(val, OMAP_CTRL_REGADDR(offset)); } +#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) +/* + * Clears the scratchpad contents in case of cold boot- + * called during bootup + */ +void omap3_clear_scratchpad_contents(void) +{ + u32 max_offset = OMAP343X_SCRATCHPAD_ROM_OFFSET; + u32 *v_addr; + u32 offset = 0; + v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM); + if (prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) & + OMAP3430_GLOBAL_COLD_RST) { + for ( ; offset <= max_offset; offset += 0x4) + __raw_writel(0x0, (v_addr + offset)); + prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST, OMAP3430_GR_MOD, + OMAP3_PRM_RSTST_OFFSET); + } +} + +/* Populate the scratchpad structure with restore structure */ +void omap3_save_scratchpad_contents(void) +{ + void * __iomem scratchpad_address; + u32 arm_context_addr; + struct omap3_scratchpad scratchpad_contents; + struct omap3_scratchpad_prcm_block prcm_block_contents; + struct omap3_scratchpad_sdrc_block sdrc_block_contents; + + /* Populate the Scratchpad contents */ + scratchpad_contents.boot_config_ptr = 0x0; + if (omap_rev() != OMAP3430_REV_ES3_0 && + omap_rev() != OMAP3430_REV_ES3_1) + scratchpad_contents.public_restore_ptr = + virt_to_phys(get_restore_pointer()); + else + scratchpad_contents.public_restore_ptr = + virt_to_phys(get_es3_restore_pointer()); + if (omap_type() == OMAP2_DEVICE_TYPE_GP) + scratchpad_contents.secure_ram_restore_ptr = 0x0; + else + scratchpad_contents.secure_ram_restore_ptr = + (u32) __pa(omap3_secure_ram_storage); + scratchpad_contents.sdrc_module_semaphore = 0x0; + scratchpad_contents.prcm_block_offset = 0x2C; + scratchpad_contents.sdrc_block_offset = 0x64; + + /* Populate the PRCM block contents */ + prcm_block_contents.prm_clksrc_ctrl = prm_read_mod_reg(OMAP3430_GR_MOD, + OMAP3_PRM_CLKSRC_CTRL_OFFSET); + prcm_block_contents.prm_clksel = prm_read_mod_reg(OMAP3430_CCR_MOD, + OMAP3_PRM_CLKSEL_OFFSET); + prcm_block_contents.cm_clksel_core = + cm_read_mod_reg(CORE_MOD, CM_CLKSEL); + prcm_block_contents.cm_clksel_wkup = + cm_read_mod_reg(WKUP_MOD, CM_CLKSEL); + prcm_block_contents.cm_clken_pll = + cm_read_mod_reg(PLL_MOD, CM_CLKEN); + prcm_block_contents.cm_autoidle_pll = + cm_read_mod_reg(PLL_MOD, OMAP3430_CM_AUTOIDLE_PLL); + prcm_block_contents.cm_clksel1_pll = + cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL); + prcm_block_contents.cm_clksel2_pll = + cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL); + prcm_block_contents.cm_clksel3_pll = + cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3); + prcm_block_contents.cm_clken_pll_mpu = + cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL); + prcm_block_contents.cm_autoidle_pll_mpu = + cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL); + prcm_block_contents.cm_clksel1_pll_mpu = + cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL); + prcm_block_contents.cm_clksel2_pll_mpu = + cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL); + prcm_block_contents.prcm_block_size = 0x0; + + /* Populate the SDRC block contents */ + sdrc_block_contents.sysconfig = + (sdrc_read_reg(SDRC_SYSCONFIG) & 0xFFFF); + sdrc_block_contents.cs_cfg = + (sdrc_read_reg(SDRC_CS_CFG) & 0xFFFF); + sdrc_block_contents.sharing = + (sdrc_read_reg(SDRC_SHARING) & 0xFFFF); + sdrc_block_contents.err_type = + (sdrc_read_reg(SDRC_ERR_TYPE) & 0xFFFF); + sdrc_block_contents.dll_a_ctrl = sdrc_read_reg(SDRC_DLLA_CTRL); + sdrc_block_contents.dll_b_ctrl = 0x0; + /* + * Due to a OMAP3 errata (1.142), on EMU/HS devices SRDC should + * be programed to issue automatic self refresh on timeout + * of AUTO_CNT = 1 prior to any transition to OFF mode. + */ + if ((omap_type() != OMAP2_DEVICE_TYPE_GP) + && (omap_rev() >= OMAP3430_REV_ES3_0)) + sdrc_block_contents.power = (sdrc_read_reg(SDRC_POWER) & + ~(SDRC_POWER_AUTOCOUNT_MASK| + SDRC_POWER_CLKCTRL_MASK)) | + (1 << SDRC_POWER_AUTOCOUNT_SHIFT) | + SDRC_SELF_REFRESH_ON_AUTOCOUNT; + else + sdrc_block_contents.power = sdrc_read_reg(SDRC_POWER); + + sdrc_block_contents.cs_0 = 0x0; + sdrc_block_contents.mcfg_0 = sdrc_read_reg(SDRC_MCFG_0); + sdrc_block_contents.mr_0 = (sdrc_read_reg(SDRC_MR_0) & 0xFFFF); + sdrc_block_contents.emr_1_0 = 0x0; + sdrc_block_contents.emr_2_0 = 0x0; + sdrc_block_contents.emr_3_0 = 0x0; + sdrc_block_contents.actim_ctrla_0 = + sdrc_read_reg(SDRC_ACTIM_CTRL_A_0); + sdrc_block_contents.actim_ctrlb_0 = + sdrc_read_reg(SDRC_ACTIM_CTRL_B_0); + sdrc_block_contents.rfr_ctrl_0 = + sdrc_read_reg(SDRC_RFR_CTRL_0); + sdrc_block_contents.cs_1 = 0x0; + sdrc_block_contents.mcfg_1 = sdrc_read_reg(SDRC_MCFG_1); + sdrc_block_contents.mr_1 = sdrc_read_reg(SDRC_MR_1) & 0xFFFF; + sdrc_block_contents.emr_1_1 = 0x0; + sdrc_block_contents.emr_2_1 = 0x0; + sdrc_block_contents.emr_3_1 = 0x0; + sdrc_block_contents.actim_ctrla_1 = + sdrc_read_reg(SDRC_ACTIM_CTRL_A_1); + sdrc_block_contents.actim_ctrlb_1 = + sdrc_read_reg(SDRC_ACTIM_CTRL_B_1); + sdrc_block_contents.rfr_ctrl_1 = + sdrc_read_reg(SDRC_RFR_CTRL_1); + sdrc_block_contents.dcdl_1_ctrl = 0x0; + sdrc_block_contents.dcdl_2_ctrl = 0x0; + sdrc_block_contents.flags = 0x0; + sdrc_block_contents.block_size = 0x0; + + arm_context_addr = virt_to_phys(omap3_arm_context); + + /* Copy all the contents to the scratchpad location */ + scratchpad_address = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD); + memcpy_toio(scratchpad_address, &scratchpad_contents, + sizeof(scratchpad_contents)); + /* Scratchpad contents being 32 bits, a divide by 4 done here */ + memcpy_toio(scratchpad_address + + scratchpad_contents.prcm_block_offset, + &prcm_block_contents, sizeof(prcm_block_contents)); + memcpy_toio(scratchpad_address + + scratchpad_contents.sdrc_block_offset, + &sdrc_block_contents, sizeof(sdrc_block_contents)); + /* + * Copies the address of the location in SDRAM where ARM + * registers get saved during a MPU OFF transition. + */ + memcpy_toio(scratchpad_address + + scratchpad_contents.sdrc_block_offset + + sizeof(sdrc_block_contents), &arm_context_addr, 4); +} + +void omap3_control_save_context(void) +{ + control_context.sysconfig = omap_ctrl_readl(OMAP2_CONTROL_SYSCONFIG); + control_context.devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); + control_context.mem_dftrw0 = + omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW0); + control_context.mem_dftrw1 = + omap_ctrl_readl(OMAP343X_CONTROL_MEM_DFTRW1); + control_context.msuspendmux_0 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_0); + control_context.msuspendmux_1 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_1); + control_context.msuspendmux_2 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_2); + control_context.msuspendmux_3 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_3); + control_context.msuspendmux_4 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_4); + control_context.msuspendmux_5 = + omap_ctrl_readl(OMAP2_CONTROL_MSUSPENDMUX_5); + control_context.sec_ctrl = omap_ctrl_readl(OMAP2_CONTROL_SEC_CTRL); + control_context.devconf1 = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1); + control_context.csirxfe = omap_ctrl_readl(OMAP343X_CONTROL_CSIRXFE); + control_context.iva2_bootaddr = + omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTADDR); + control_context.iva2_bootmod = + omap_ctrl_readl(OMAP343X_CONTROL_IVA2_BOOTMOD); + control_context.debobs_0 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(0)); + control_context.debobs_1 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(1)); + control_context.debobs_2 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(2)); + control_context.debobs_3 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(3)); + control_context.debobs_4 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(4)); + control_context.debobs_5 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(5)); + control_context.debobs_6 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(6)); + control_context.debobs_7 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(7)); + control_context.debobs_8 = omap_ctrl_readl(OMAP343X_CONTROL_DEBOBS(8)); + control_context.prog_io0 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO0); + control_context.prog_io1 = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1); + control_context.dss_dpll_spreading = + omap_ctrl_readl(OMAP343X_CONTROL_DSS_DPLL_SPREADING); + control_context.core_dpll_spreading = + omap_ctrl_readl(OMAP343X_CONTROL_CORE_DPLL_SPREADING); + control_context.per_dpll_spreading = + omap_ctrl_readl(OMAP343X_CONTROL_PER_DPLL_SPREADING); + control_context.usbhost_dpll_spreading = + omap_ctrl_readl(OMAP343X_CONTROL_USBHOST_DPLL_SPREADING); + control_context.pbias_lite = + omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE); + control_context.temp_sensor = + omap_ctrl_readl(OMAP343X_CONTROL_TEMP_SENSOR); + control_context.sramldo4 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO4); + control_context.sramldo5 = omap_ctrl_readl(OMAP343X_CONTROL_SRAMLDO5); + control_context.csi = omap_ctrl_readl(OMAP343X_CONTROL_CSI); + return; +} + +void omap3_control_restore_context(void) +{ + omap_ctrl_writel(control_context.sysconfig, OMAP2_CONTROL_SYSCONFIG); + omap_ctrl_writel(control_context.devconf0, OMAP2_CONTROL_DEVCONF0); + omap_ctrl_writel(control_context.mem_dftrw0, + OMAP343X_CONTROL_MEM_DFTRW0); + omap_ctrl_writel(control_context.mem_dftrw1, + OMAP343X_CONTROL_MEM_DFTRW1); + omap_ctrl_writel(control_context.msuspendmux_0, + OMAP2_CONTROL_MSUSPENDMUX_0); + omap_ctrl_writel(control_context.msuspendmux_1, + OMAP2_CONTROL_MSUSPENDMUX_1); + omap_ctrl_writel(control_context.msuspendmux_2, + OMAP2_CONTROL_MSUSPENDMUX_2); + omap_ctrl_writel(control_context.msuspendmux_3, + OMAP2_CONTROL_MSUSPENDMUX_3); + omap_ctrl_writel(control_context.msuspendmux_4, + OMAP2_CONTROL_MSUSPENDMUX_4); + omap_ctrl_writel(control_context.msuspendmux_5, + OMAP2_CONTROL_MSUSPENDMUX_5); + omap_ctrl_writel(control_context.sec_ctrl, OMAP2_CONTROL_SEC_CTRL); + omap_ctrl_writel(control_context.devconf1, OMAP343X_CONTROL_DEVCONF1); + omap_ctrl_writel(control_context.csirxfe, OMAP343X_CONTROL_CSIRXFE); + omap_ctrl_writel(control_context.iva2_bootaddr, + OMAP343X_CONTROL_IVA2_BOOTADDR); + omap_ctrl_writel(control_context.iva2_bootmod, + OMAP343X_CONTROL_IVA2_BOOTMOD); + omap_ctrl_writel(control_context.debobs_0, OMAP343X_CONTROL_DEBOBS(0)); + omap_ctrl_writel(control_context.debobs_1, OMAP343X_CONTROL_DEBOBS(1)); + omap_ctrl_writel(control_context.debobs_2, OMAP343X_CONTROL_DEBOBS(2)); + omap_ctrl_writel(control_context.debobs_3, OMAP343X_CONTROL_DEBOBS(3)); + omap_ctrl_writel(control_context.debobs_4, OMAP343X_CONTROL_DEBOBS(4)); + omap_ctrl_writel(control_context.debobs_5, OMAP343X_CONTROL_DEBOBS(5)); + omap_ctrl_writel(control_context.debobs_6, OMAP343X_CONTROL_DEBOBS(6)); + omap_ctrl_writel(control_context.debobs_7, OMAP343X_CONTROL_DEBOBS(7)); + omap_ctrl_writel(control_context.debobs_8, OMAP343X_CONTROL_DEBOBS(8)); + omap_ctrl_writel(control_context.prog_io0, OMAP343X_CONTROL_PROG_IO0); + omap_ctrl_writel(control_context.prog_io1, OMAP343X_CONTROL_PROG_IO1); + omap_ctrl_writel(control_context.dss_dpll_spreading, + OMAP343X_CONTROL_DSS_DPLL_SPREADING); + omap_ctrl_writel(control_context.core_dpll_spreading, + OMAP343X_CONTROL_CORE_DPLL_SPREADING); + omap_ctrl_writel(control_context.per_dpll_spreading, + OMAP343X_CONTROL_PER_DPLL_SPREADING); + omap_ctrl_writel(control_context.usbhost_dpll_spreading, + OMAP343X_CONTROL_USBHOST_DPLL_SPREADING); + omap_ctrl_writel(control_context.pbias_lite, + OMAP343X_CONTROL_PBIAS_LITE); + omap_ctrl_writel(control_context.temp_sensor, + OMAP343X_CONTROL_TEMP_SENSOR); + omap_ctrl_writel(control_context.sramldo4, OMAP343X_CONTROL_SRAMLDO4); + omap_ctrl_writel(control_context.sramldo5, OMAP343X_CONTROL_SRAMLDO5); + omap_ctrl_writel(control_context.csi, OMAP343X_CONTROL_CSI); + return; +} +#endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */ |
