mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-13 06:42:56 +00:00
14ca9f7f5a
This function is actually intended to read a string rather than a property. All of its current callers use it that way. Also there is no way to return the length of the property from this function. Rename it to better indicate its purpose, using ofnode_read as the prefix since this matches most other functions. Also add some tests which are missing for these functions. Signed-off-by: Simon Glass <sjg@chromium.org>
219 lines
5.6 KiB
C
219 lines
5.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
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*/
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#include <common.h>
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#include <dm.h>
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#include <env.h>
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#include <misc.h>
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#include <spl.h>
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#include <syscon.h>
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#include <u-boot/crc.h>
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#include <usb.h>
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#include <dm/pinctrl.h>
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#include <dm/uclass-internal.h>
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#include <asm/io.h>
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#include <asm/setup.h>
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#include <asm/arch-rockchip/clock.h>
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#include <asm/arch-rockchip/hardware.h>
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#include <asm/arch-rockchip/grf_rk3399.h>
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#include <asm/arch-rockchip/periph.h>
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#include <asm/arch-rockchip/misc.h>
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#include <power/regulator.h>
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#include <u-boot/sha256.h>
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static void setup_iodomain(void)
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{
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const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3;
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struct rk3399_grf_regs *grf =
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syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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/*
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* Set bit 3 in GRF_IO_VSEL so PCIE_RST# works (pin GPIO4_C6).
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* Linux assumes that PCIE_RST# works out of the box as it probes
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* PCIe before loading the iodomain driver.
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*/
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rk_setreg(&grf->io_vsel, 1 << GRF_IO_VSEL_GPIO4CD_SHIFT);
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}
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/*
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* Swap mmc0 and mmc1 in boot_targets if booted from SD-Card.
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*
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* If bootsource is uSD-card we can assume that we want to use the
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* SD-Card instead of the eMMC as first boot_target for distroboot.
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* We only want to swap the defaults and not any custom environment a
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* user has set. We exit early if a changed boot_targets environment
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* is detected.
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*/
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static int setup_boottargets(void)
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{
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const char *boot_device =
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ofnode_read_chosen_string("u-boot,spl-boot-device");
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char *env_default, *env;
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if (!boot_device) {
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debug("%s: /chosen/u-boot,spl-boot-device not set\n",
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__func__);
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return -1;
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}
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debug("%s: booted from %s\n", __func__, boot_device);
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env_default = env_get_default("boot_targets");
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env = env_get("boot_targets");
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if (!env) {
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debug("%s: boot_targets does not exist\n", __func__);
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return -1;
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}
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debug("%s: boot_targets current: %s - default: %s\n",
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__func__, env, env_default);
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if (strcmp(env_default, env) != 0) {
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debug("%s: boot_targets not default, don't change it\n",
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__func__);
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return 0;
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}
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/*
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* Only run, if booting from mmc1 (i.e. /dwmmc@fe320000) and
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* only consider cases where the default boot-order first
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* tries to boot from mmc0 (eMMC) and then from mmc1
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* (i.e. external SD).
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*
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* In other words: the SD card will be moved to earlier in the
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* order, if U-Boot was also loaded from the SD-card.
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*/
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if (!strcmp(boot_device, "/dwmmc@fe320000")) {
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char *mmc0, *mmc1;
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debug("%s: booted from SD-Card\n", __func__);
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mmc0 = strstr(env, "mmc0");
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mmc1 = strstr(env, "mmc1");
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if (!mmc0 || !mmc1) {
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debug("%s: only one mmc boot_target found\n", __func__);
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return -1;
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}
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/*
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* If mmc0 comes first in the boot order, we need to change
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* the strings to make mmc1 first.
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*/
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if (mmc0 < mmc1) {
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mmc0[3] = '1';
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mmc1[3] = '0';
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debug("%s: set boot_targets to: %s\n", __func__, env);
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env_set("boot_targets", env);
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}
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}
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return 0;
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}
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int misc_init_r(void)
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{
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const u32 cpuid_offset = 0x7;
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const u32 cpuid_length = 0x10;
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u8 cpuid[cpuid_length];
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int ret;
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ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid);
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if (ret)
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return ret;
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ret = rockchip_cpuid_set(cpuid, cpuid_length);
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if (ret)
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return ret;
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ret = rockchip_setup_macaddr();
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if (ret)
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return ret;
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setup_iodomain();
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setup_boottargets();
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return 0;
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}
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#ifdef CONFIG_SERIAL_TAG
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void get_board_serial(struct tag_serialnr *serialnr)
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{
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char *serial_string;
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u64 serial = 0;
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serial_string = env_get("serial#");
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if (serial_string)
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serial = simple_strtoull(serial_string, NULL, 16);
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serialnr->high = (u32)(serial >> 32);
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serialnr->low = (u32)(serial & 0xffffffff);
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}
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#endif
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/**
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* Switch power at an external regulator (for our root hub).
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*
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* @param ctrl pointer to the xHCI controller
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* @param port port number as in the control message (one-based)
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* @param enable boolean indicating whether to enable or disable power
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* @return returns 0 on success, an error-code on failure
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*/
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static int board_usb_port_power_set(struct udevice *dev, int port,
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bool enable)
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{
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#if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR)
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/* We start counting ports at 0, while USB counts from 1. */
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int index = port - 1;
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const char *regname = NULL;
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struct udevice *regulator;
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const char *prop = "tsd,usb-port-power";
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int ret;
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debug("%s: ctrl '%s' port %d enable %s\n", __func__,
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dev_read_name(dev), port, enable ? "true" : "false");
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ret = dev_read_string_index(dev, prop, index, ®name);
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if (ret < 0) {
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debug("%s: ctrl '%s' port %d: no entry in '%s'\n",
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__func__, dev_read_name(dev), port, prop);
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return ret;
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}
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ret = regulator_get_by_platname(regname, ®ulator);
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if (ret) {
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debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n",
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__func__, dev_read_name(dev), port, regname);
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return ret;
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}
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regulator_set_enable(regulator, enable);
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return 0;
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#else
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return -ENOTSUPP;
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#endif
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}
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void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
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{
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struct udevice *dev = hub->pusb_dev->dev;
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struct udevice *ctrl;
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/* We are only interested in our root-hubs */
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if (usb_hub_is_root_hub(dev) == false)
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return;
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ctrl = usb_get_bus(dev);
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if (!ctrl) {
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debug("%s: could not retrieve ctrl for hub\n", __func__);
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return;
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}
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/*
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* To work around an incompatibility between the single-threaded
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* USB stack in U-Boot and (a strange low-power mode of) the USB
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* hub we have on-module, we need to delay powering on the hub
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* until the first time the port is probed.
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*/
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board_usb_port_power_set(ctrl, port, true);
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}
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