cregit-Linux how code gets into the kernel

Release 4.14 arch/powerpc/platforms/83xx/km83xx.c

/*
 * Copyright 2008-2011 DENX Software Engineering GmbH
 * Author: Heiko Schocher <hs@denx.de>
 *
 * Description:
 * Keymile 83xx platform specific routines.
 *
 * 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.
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>

#include <linux/atomic.h>
#include <linux/time.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include <soc/fsl/qe/qe.h>
#include <soc/fsl/qe/qe_ic.h>

#include "mpc83xx.h"


#define SVR_REV(svr)    (((svr) >>  0) & 0xFFFF) 
/* Revision field */


static void quirk_mpc8360e_qe_enet10(void) { /* * handle mpc8360E Erratum QE_ENET10: * RGMII AC values do not meet the specification */ uint svid = mfspr(SPRN_SVR); struct device_node *np_par; struct resource res; void __iomem *base; int ret; np_par = of_find_node_by_name(NULL, "par_io"); if (np_par == NULL) { pr_warn("%s couldn;t find par_io node\n", __func__); return; } /* Map Parallel I/O ports registers */ ret = of_address_to_resource(np_par, 0, &res); if (ret) { pr_warn("%s couldn;t map par_io registers\n", __func__); return; } base = ioremap(res.start, res.end - res.start + 1); /* * set output delay adjustments to default values according * table 5 in Errata Rev. 5, 9/2011: * * write 0b01 to UCC1 bits 18:19 * write 0b01 to UCC2 option 1 bits 4:5 * write 0b01 to UCC2 option 2 bits 16:17 */ clrsetbits_be32((base + 0xa8), 0x0c00f000, 0x04005000); /* * set output delay adjustments to default values according * table 3-13 in Reference Manual Rev.3 05/2010: * * write 0b01 to UCC2 option 2 bits 16:17 * write 0b0101 to UCC1 bits 20:23 * write 0b0101 to UCC2 option 1 bits 24:27 */ clrsetbits_be32((base + 0xac), 0x0000cff0, 0x00004550); if (SVR_REV(svid) == 0x0021) { /* * UCC2 option 1: write 0b1010 to bits 24:27 * at address IMMRBAR+0x14AC */ clrsetbits_be32((base + 0xac), 0x000000f0, 0x000000a0); } else if (SVR_REV(svid) == 0x0020) { /* * UCC1: write 0b11 to bits 18:19 * at address IMMRBAR+0x14A8 */ setbits32((base + 0xa8), 0x00003000); /* * UCC2 option 1: write 0b11 to bits 4:5 * at address IMMRBAR+0x14A8 */ setbits32((base + 0xa8), 0x0c000000); /* * UCC2 option 2: write 0b11 to bits 16:17 * at address IMMRBAR+0x14AC */ setbits32((base + 0xac), 0x0000c000); } iounmap(base); of_node_put(np_par); }

Contributors

PersonTokensPropCommitsCommitProp
Heiko Schocher12055.56%125.00%
Christian Herzig8539.35%125.00%
Gerlando Falauto94.17%125.00%
Holger Brunck20.93%125.00%
Total216100.00%4100.00%

/* ************************************************************************ * * Setup the architecture * */
static void __init mpc83xx_km_setup_arch(void) { #ifdef CONFIG_QUICC_ENGINE struct device_node *np; #endif mpc83xx_setup_arch(); #ifdef CONFIG_QUICC_ENGINE np = of_find_node_by_name(NULL, "par_io"); if (np != NULL) { par_io_init(np); of_node_put(np); for_each_node_by_name(np, "spi") par_io_of_config(np); for_each_node_by_name(np, "ucc") par_io_of_config(np); /* Only apply this quirk when par_io is available */ np = of_find_compatible_node(NULL, "network", "ucc_geth"); if (np != NULL) { quirk_mpc8360e_qe_enet10(); of_node_put(np); } } #endif /* CONFIG_QUICC_ENGINE */ }

Contributors

PersonTokensPropCommitsCommitProp
Gerlando Falauto9489.52%250.00%
Heiko Schocher109.52%125.00%
Kevin Hao10.95%125.00%
Total105100.00%4100.00%

machine_device_initcall(mpc83xx_km, mpc83xx_declare_of_platform_devices); /* list of the supported boards */ static char *board[] __initdata = { "Keymile,KMETER1", "Keymile,kmpbec8321", NULL }; /* * Called very early, MMU is off, device-tree isn't unflattened */
static int __init mpc83xx_km_probe(void) { int i = 0; while (board[i]) { if (of_machine_is_compatible(board[i])) break; i++; } return (board[i] != NULL); }

Contributors

PersonTokensPropCommitsCommitProp
Holger Brunck3574.47%133.33%
Heiko Schocher1123.40%133.33%
Benjamin Herrenschmidt12.13%133.33%
Total47100.00%3100.00%

define_machine(mpc83xx_km) { .name = "mpc83xx-km-platform", .probe = mpc83xx_km_probe, .setup_arch = mpc83xx_km_setup_arch, .init_IRQ = mpc83xx_ipic_and_qe_init_IRQ, .get_irq = ipic_get_irq, .restart = mpc83xx_restart, .time_init = mpc83xx_time_init, .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, };

Overall Contributors

PersonTokensPropCommitsCommitProp
Heiko Schocher28152.23%18.33%
Gerlando Falauto10419.33%216.67%
Christian Herzig8615.99%18.33%
Holger Brunck6011.15%216.67%
Zhao Qiang20.37%18.33%
Dmitry Baryshkov20.37%216.67%
Benjamin Herrenschmidt10.19%18.33%
Kevin Hao10.19%18.33%
Arun Sharma10.19%18.33%
Total538100.00%12100.00%
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