From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- arch/arm/mach-omap2/sleep34xx.S | 569 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 569 insertions(+) create mode 100644 arch/arm/mach-omap2/sleep34xx.S (limited to 'arch/arm/mach-omap2/sleep34xx.S') diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S new file mode 100644 index 000000000..781a131b4 --- /dev/null +++ b/arch/arm/mach-omap2/sleep34xx.S @@ -0,0 +1,569 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * (C) Copyright 2007 + * Texas Instruments + * Karthik Dasu + * + * (C) Copyright 2004 + * Texas Instruments, + * Richard Woodruff + */ +#include + +#include + +#include "omap34xx.h" +#include "iomap.h" +#include "cm3xxx.h" +#include "prm3xxx.h" +#include "sdrc.h" +#include "sram.h" +#include "control.h" + +/* + * Registers access definitions + */ +#define SDRC_SCRATCHPAD_SEM_OFFS 0xc +#define SDRC_SCRATCHPAD_SEM_V OMAP343X_SCRATCHPAD_REGADDR\ + (SDRC_SCRATCHPAD_SEM_OFFS) +#define PM_PREPWSTST_CORE_P OMAP3430_PRM_BASE + CORE_MOD +\ + OMAP3430_PM_PREPWSTST +#define PM_PWSTCTRL_MPU_P OMAP3430_PRM_BASE + MPU_MOD + OMAP2_PM_PWSTCTRL +#define CM_IDLEST1_CORE_V OMAP34XX_CM_REGADDR(CORE_MOD, CM_IDLEST1) +#define CM_IDLEST_CKGEN_V OMAP34XX_CM_REGADDR(PLL_MOD, CM_IDLEST) +#define SRAM_BASE_P OMAP3_SRAM_PA +#define CONTROL_STAT OMAP343X_CTRL_BASE + OMAP343X_CONTROL_STATUS +#define CONTROL_MEM_RTA_CTRL (OMAP343X_CTRL_BASE +\ + OMAP36XX_CONTROL_MEM_RTA_CTRL) + +/* Move this as correct place is available */ +#define SCRATCHPAD_MEM_OFFS 0x310 +#define SCRATCHPAD_BASE_P (OMAP343X_CTRL_BASE +\ + OMAP343X_CONTROL_MEM_WKUP +\ + SCRATCHPAD_MEM_OFFS) +#define SDRC_POWER_V OMAP34XX_SDRC_REGADDR(SDRC_POWER) +#define SDRC_SYSCONFIG_P (OMAP343X_SDRC_BASE + SDRC_SYSCONFIG) +#define SDRC_MR_0_P (OMAP343X_SDRC_BASE + SDRC_MR_0) +#define SDRC_EMR2_0_P (OMAP343X_SDRC_BASE + SDRC_EMR2_0) +#define SDRC_MANUAL_0_P (OMAP343X_SDRC_BASE + SDRC_MANUAL_0) +#define SDRC_MR_1_P (OMAP343X_SDRC_BASE + SDRC_MR_1) +#define SDRC_EMR2_1_P (OMAP343X_SDRC_BASE + SDRC_EMR2_1) +#define SDRC_MANUAL_1_P (OMAP343X_SDRC_BASE + SDRC_MANUAL_1) +#define SDRC_DLLA_STATUS_V OMAP34XX_SDRC_REGADDR(SDRC_DLLA_STATUS) +#define SDRC_DLLA_CTRL_V OMAP34XX_SDRC_REGADDR(SDRC_DLLA_CTRL) + +/* + * This file needs be built unconditionally as ARM to interoperate correctly + * with non-Thumb-2-capable firmware. + */ + .arm + +/* + * API functions + */ + + .text +/* + * L2 cache needs to be toggled for stable OFF mode functionality on 3630. + * This function sets up a flag that will allow for this toggling to take + * place on 3630. Hopefully some version in the future may not need this. + */ +ENTRY(enable_omap3630_toggle_l2_on_restore) + stmfd sp!, {lr} @ save registers on stack + /* Setup so that we will disable and enable l2 */ + mov r1, #0x1 + adr r3, l2dis_3630_offset + ldr r2, [r3] @ value for offset + str r1, [r2, r3] @ write to l2dis_3630 + ldmfd sp!, {pc} @ restore regs and return +ENDPROC(enable_omap3630_toggle_l2_on_restore) + +/* + * Function to call rom code to save secure ram context. + * + * r0 = physical address of the parameters + */ + .arch armv7-a + .arch_extension sec +ENTRY(save_secure_ram_context) + stmfd sp!, {r4 - r11, lr} @ save registers on stack + mov r3, r0 @ physical address of parameters + mov r0, #25 @ set service ID for PPA + mov r12, r0 @ copy secure service ID in r12 + mov r1, #0 @ set task id for ROM code in r1 + mov r2, #4 @ set some flags in r2, r6 + mov r6, #0xff + dsb @ data write barrier + dmb @ data memory barrier + smc #1 @ call SMI monitor (smi #1) + nop + nop + nop + nop + ldmfd sp!, {r4 - r11, pc} +ENDPROC(save_secure_ram_context) + +/* + * ====================== + * == Idle entry point == + * ====================== + */ + +/* + * Forces OMAP into idle state + * + * omap34xx_cpu_suspend() - This bit of code saves the CPU context if needed + * and executes the WFI instruction. Calling WFI effectively changes the + * power domains states to the desired target power states. + * + * + * Notes: + * - only the minimum set of functions gets copied to internal SRAM at boot + * and after wake-up from OFF mode, cf. omap_push_sram_idle. The function + * pointers in SDRAM or SRAM are called depending on the desired low power + * target state. + * - when the OMAP wakes up it continues at different execution points + * depending on the low power mode (non-OFF vs OFF modes), + * cf. 'Resume path for xxx mode' comments. + */ + .align 3 +ENTRY(omap34xx_cpu_suspend) + stmfd sp!, {r4 - r11, lr} @ save registers on stack + + /* + * r0 contains information about saving context: + * 0 - No context lost + * 1 - Only L1 and logic lost + * 2 - Only L2 lost (Even L1 is retained we clean it along with L2) + * 3 - Both L1 and L2 lost and logic lost + */ + + /* + * For OFF mode: save context and jump to WFI in SDRAM (omap3_do_wfi) + * For non-OFF modes: jump to the WFI code in SRAM (omap3_do_wfi_sram) + */ + ldr r4, omap3_do_wfi_sram_addr + ldr r5, [r4] + cmp r0, #0x0 @ If no context save required, + bxeq r5 @ jump to the WFI code in SRAM + + + /* Otherwise fall through to the save context code */ +save_context_wfi: + /* + * jump out to kernel flush routine + * - reuse that code is better + * - it executes in a cached space so is faster than refetch per-block + * - should be faster and will change with kernel + * - 'might' have to copy address, load and jump to it + * Flush all data from the L1 data cache before disabling + * SCTLR.C bit. + */ + ldr r1, kernel_flush + mov lr, pc + bx r1 + + /* + * Clear the SCTLR.C bit to prevent further data cache + * allocation. Clearing SCTLR.C would make all the data accesses + * strongly ordered and would not hit the cache. + */ + mrc p15, 0, r0, c1, c0, 0 + bic r0, r0, #(1 << 2) @ Disable the C bit + mcr p15, 0, r0, c1, c0, 0 + isb + + /* + * Invalidate L1 data cache. Even though only invalidate is + * necessary exported flush API is used here. Doing clean + * on already clean cache would be almost NOP. + */ + ldr r1, kernel_flush + blx r1 + b omap3_do_wfi +ENDPROC(omap34xx_cpu_suspend) +omap3_do_wfi_sram_addr: + .word omap3_do_wfi_sram +kernel_flush: + .word v7_flush_dcache_all + +/* =================================== + * == WFI instruction => Enter idle == + * =================================== + */ + +/* + * Do WFI instruction + * Includes the resume path for non-OFF modes + * + * This code gets copied to internal SRAM and is accessible + * from both SDRAM and SRAM: + * - executed from SRAM for non-off modes (omap3_do_wfi_sram), + * - executed from SDRAM for OFF mode (omap3_do_wfi). + */ + .align 3 +ENTRY(omap3_do_wfi) + ldr r4, sdrc_power @ read the SDRC_POWER register + ldr r5, [r4] @ read the contents of SDRC_POWER + orr r5, r5, #0x40 @ enable self refresh on idle req + str r5, [r4] @ write back to SDRC_POWER register + + /* Data memory barrier and Data sync barrier */ + dsb + dmb + +/* + * =================================== + * == WFI instruction => Enter idle == + * =================================== + */ + wfi @ wait for interrupt + +/* + * =================================== + * == Resume path for non-OFF modes == + * =================================== + */ + nop + nop + nop + nop + nop + nop + nop + nop + nop + nop + +/* + * This function implements the erratum ID i581 WA: + * SDRC state restore before accessing the SDRAM + * + * Only used at return from non-OFF mode. For OFF + * mode the ROM code configures the SDRC and + * the DPLL before calling the restore code directly + * from DDR. + */ + +/* Make sure SDRC accesses are ok */ +wait_sdrc_ok: + +/* DPLL3 must be locked before accessing the SDRC. Maybe the HW ensures this */ + ldr r4, cm_idlest_ckgen +wait_dpll3_lock: + ldr r5, [r4] + tst r5, #1 + beq wait_dpll3_lock + + ldr r4, cm_idlest1_core +wait_sdrc_ready: + ldr r5, [r4] + tst r5, #0x2 + bne wait_sdrc_ready + /* allow DLL powerdown upon hw idle req */ + ldr r4, sdrc_power + ldr r5, [r4] + bic r5, r5, #0x40 + str r5, [r4] + +is_dll_in_lock_mode: + /* Is dll in lock mode? */ + ldr r4, sdrc_dlla_ctrl + ldr r5, [r4] + tst r5, #0x4 + bne exit_nonoff_modes @ Return if locked + /* wait till dll locks */ +wait_dll_lock_timed: + ldr r4, sdrc_dlla_status + /* Wait 20uS for lock */ + mov r6, #8 +wait_dll_lock: + subs r6, r6, #0x1 + beq kick_dll + ldr r5, [r4] + and r5, r5, #0x4 + cmp r5, #0x4 + bne wait_dll_lock + b exit_nonoff_modes @ Return when locked + + /* disable/reenable DLL if not locked */ +kick_dll: + ldr r4, sdrc_dlla_ctrl + ldr r5, [r4] + mov r6, r5 + bic r6, #(1<<3) @ disable dll + str r6, [r4] + dsb + orr r6, r6, #(1<<3) @ enable dll + str r6, [r4] + dsb + b wait_dll_lock_timed + +exit_nonoff_modes: + /* Re-enable C-bit if needed */ + mrc p15, 0, r0, c1, c0, 0 + tst r0, #(1 << 2) @ Check C bit enabled? + orreq r0, r0, #(1 << 2) @ Enable the C bit if cleared + mcreq p15, 0, r0, c1, c0, 0 + isb + +/* + * =================================== + * == Exit point from non-OFF modes == + * =================================== + */ + ldmfd sp!, {r4 - r11, pc} @ restore regs and return +ENDPROC(omap3_do_wfi) +sdrc_power: + .word SDRC_POWER_V +cm_idlest1_core: + .word CM_IDLEST1_CORE_V +cm_idlest_ckgen: + .word CM_IDLEST_CKGEN_V +sdrc_dlla_status: + .word SDRC_DLLA_STATUS_V +sdrc_dlla_ctrl: + .word SDRC_DLLA_CTRL_V +ENTRY(omap3_do_wfi_sz) + .word . - omap3_do_wfi + + +/* + * ============================== + * == Resume path for OFF mode == + * ============================== + */ + +/* + * The restore_* functions are called by the ROM code + * when back from WFI in OFF mode. + * Cf. the get_*restore_pointer functions. + * + * restore_es3: applies to 34xx >= ES3.0 + * restore_3630: applies to 36xx + * restore: common code for 3xxx + * + * Note: when back from CORE and MPU OFF mode we are running + * from SDRAM, without MMU, without the caches and prediction. + * Also the SRAM content has been cleared. + */ +ENTRY(omap3_restore_es3) + ldr r5, pm_prepwstst_core_p + ldr r4, [r5] + and r4, r4, #0x3 + cmp r4, #0x0 @ Check if previous power state of CORE is OFF + bne omap3_restore @ Fall through to OMAP3 common code + adr r0, es3_sdrc_fix + ldr r1, sram_base + ldr r2, es3_sdrc_fix_sz + mov r2, r2, ror #2 +copy_to_sram: + ldmia r0!, {r3} @ val = *src + stmia r1!, {r3} @ *dst = val + subs r2, r2, #0x1 @ num_words-- + bne copy_to_sram + ldr r1, sram_base + blx r1 + b omap3_restore @ Fall through to OMAP3 common code +ENDPROC(omap3_restore_es3) + +ENTRY(omap3_restore_3630) + ldr r1, pm_prepwstst_core_p + ldr r2, [r1] + and r2, r2, #0x3 + cmp r2, #0x0 @ Check if previous power state of CORE is OFF + bne omap3_restore @ Fall through to OMAP3 common code + /* Disable RTA before giving control */ + ldr r1, control_mem_rta + mov r2, #OMAP36XX_RTA_DISABLE + str r2, [r1] +ENDPROC(omap3_restore_3630) + + /* Fall through to common code for the remaining logic */ + +ENTRY(omap3_restore) + /* + * Read the pwstctrl register to check the reason for mpu reset. + * This tells us what was lost. + */ + ldr r1, pm_pwstctrl_mpu + ldr r2, [r1] + and r2, r2, #0x3 + cmp r2, #0x0 @ Check if target power state was OFF or RET + bne logic_l1_restore + + adr r1, l2dis_3630_offset @ address for offset + ldr r0, [r1] @ value for offset + ldr r0, [r1, r0] @ value at l2dis_3630 + cmp r0, #0x1 @ should we disable L2 on 3630? + bne skipl2dis + mrc p15, 0, r0, c1, c0, 1 + bic r0, r0, #2 @ disable L2 cache + mcr p15, 0, r0, c1, c0, 1 +skipl2dis: + ldr r0, control_stat + ldr r1, [r0] + and r1, #0x700 + cmp r1, #0x300 + beq l2_inv_gp + adr r0, l2_inv_api_params_offset + ldr r3, [r0] + add r3, r3, r0 @ r3 points to dummy parameters + mov r0, #40 @ set service ID for PPA + mov r12, r0 @ copy secure Service ID in r12 + mov r1, #0 @ set task id for ROM code in r1 + mov r2, #4 @ set some flags in r2, r6 + mov r6, #0xff + dsb @ data write barrier + dmb @ data memory barrier + smc #1 @ call SMI monitor (smi #1) + /* Write to Aux control register to set some bits */ + mov r0, #42 @ set service ID for PPA + mov r12, r0 @ copy secure Service ID in r12 + mov r1, #0 @ set task id for ROM code in r1 + mov r2, #4 @ set some flags in r2, r6 + mov r6, #0xff + ldr r4, scratchpad_base + ldr r3, [r4, #0xBC] @ r3 points to parameters + dsb @ data write barrier + dmb @ data memory barrier + smc #1 @ call SMI monitor (smi #1) + +#ifdef CONFIG_OMAP3_L2_AUX_SECURE_SAVE_RESTORE + /* Restore L2 aux control register */ + @ set service ID for PPA + mov r0, #CONFIG_OMAP3_L2_AUX_SECURE_SERVICE_SET_ID + mov r12, r0 @ copy service ID in r12 + mov r1, #0 @ set task ID for ROM code in r1 + mov r2, #4 @ set some flags in r2, r6 + mov r6, #0xff + ldr r4, scratchpad_base + ldr r3, [r4, #0xBC] + adds r3, r3, #8 @ r3 points to parameters + dsb @ data write barrier + dmb @ data memory barrier + smc #1 @ call SMI monitor (smi #1) +#endif + b logic_l1_restore + + .align +l2_inv_api_params_offset: + .long l2_inv_api_params - . +l2_inv_gp: + /* Execute smi to invalidate L2 cache */ + mov r12, #0x1 @ set up to invalidate L2 + smc #0 @ Call SMI monitor (smieq) + /* Write to Aux control register to set some bits */ + ldr r4, scratchpad_base + ldr r3, [r4,#0xBC] + ldr r0, [r3,#4] + mov r12, #0x3 + smc #0 @ Call SMI monitor (smieq) + ldr r4, scratchpad_base + ldr r3, [r4,#0xBC] + ldr r0, [r3,#12] + mov r12, #0x2 + smc #0 @ Call SMI monitor (smieq) +logic_l1_restore: + adr r0, l2dis_3630_offset @ address for offset + ldr r1, [r0] @ value for offset + ldr r1, [r0, r1] @ value at l2dis_3630 + cmp r1, #0x1 @ Test if L2 re-enable needed on 3630 + bne skipl2reen + mrc p15, 0, r1, c1, c0, 1 + orr r1, r1, #2 @ re-enable L2 cache + mcr p15, 0, r1, c1, c0, 1 +skipl2reen: + + /* Now branch to the common CPU resume function */ + b cpu_resume +ENDPROC(omap3_restore) + + .ltorg + +/* + * Local variables + */ +pm_prepwstst_core_p: + .word PM_PREPWSTST_CORE_P +pm_pwstctrl_mpu: + .word PM_PWSTCTRL_MPU_P +scratchpad_base: + .word SCRATCHPAD_BASE_P +sram_base: + .word SRAM_BASE_P + 0x8000 +control_stat: + .word CONTROL_STAT +control_mem_rta: + .word CONTROL_MEM_RTA_CTRL +l2dis_3630_offset: + .long l2dis_3630 - . + + .data + .align 2 +l2dis_3630: + .word 0 + + .data + .align 2 +l2_inv_api_params: + .word 0x1, 0x00 + +/* + * Internal functions + */ + +/* + * This function implements the erratum ID i443 WA, applies to 34xx >= ES3.0 + * Copied to and run from SRAM in order to reconfigure the SDRC parameters. + */ + .text + .align 3 +ENTRY(es3_sdrc_fix) + ldr r4, sdrc_syscfg @ get config addr + ldr r5, [r4] @ get value + tst r5, #0x100 @ is part access blocked + it eq + biceq r5, r5, #0x100 @ clear bit if set + str r5, [r4] @ write back change + ldr r4, sdrc_mr_0 @ get config addr + ldr r5, [r4] @ get value + str r5, [r4] @ write back change + ldr r4, sdrc_emr2_0 @ get config addr + ldr r5, [r4] @ get value + str r5, [r4] @ write back change + ldr r4, sdrc_manual_0 @ get config addr + mov r5, #0x2 @ autorefresh command + str r5, [r4] @ kick off refreshes + ldr r4, sdrc_mr_1 @ get config addr + ldr r5, [r4] @ get value + str r5, [r4] @ write back change + ldr r4, sdrc_emr2_1 @ get config addr + ldr r5, [r4] @ get value + str r5, [r4] @ write back change + ldr r4, sdrc_manual_1 @ get config addr + mov r5, #0x2 @ autorefresh command + str r5, [r4] @ kick off refreshes + bx lr + +/* + * Local variables + */ + .align +sdrc_syscfg: + .word SDRC_SYSCONFIG_P +sdrc_mr_0: + .word SDRC_MR_0_P +sdrc_emr2_0: + .word SDRC_EMR2_0_P +sdrc_manual_0: + .word SDRC_MANUAL_0_P +sdrc_mr_1: + .word SDRC_MR_1_P +sdrc_emr2_1: + .word SDRC_EMR2_1_P +sdrc_manual_1: + .word SDRC_MANUAL_1_P +ENDPROC(es3_sdrc_fix) +ENTRY(es3_sdrc_fix_sz) + .word . - es3_sdrc_fix -- cgit v1.2.3