+++ /dev/null
-* Freescale PQ3 and QorIQ based Cache SRAM
-
-Freescale's mpc85xx and some QorIQ platforms provide an
-option of configuring a part of (or full) cache memory
-as SRAM. This cache SRAM representation in the device
-tree should be done as under:-
-
-Required properties:
-
-- compatible : should be "fsl,p2020-cache-sram"
-- fsl,cache-sram-ctlr-handle : points to the L2 controller
-- reg : offset and length of the cache-sram.
-
-Example:
-
-cache-sram@fff00000 {
- fsl,cache-sram-ctlr-handle = <&L2>;
- reg = <0 0xfff00000 0 0x10000>;
- compatible = "fsl,p2020-cache-sram";
-};
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright 2009 Freescale Semiconductor, Inc.
- *
- * Cache SRAM handling for QorIQ platform
- *
- * Author: Vivek Mahajan <vivek.mahajan@freescale.com>
-
- * This file is derived from the original work done
- * by Sylvain Munaut for the Bestcomm SRAM allocator.
- */
-
-#ifndef __ASM_POWERPC_FSL_85XX_CACHE_SRAM_H__
-#define __ASM_POWERPC_FSL_85XX_CACHE_SRAM_H__
-
-#include <asm/rheap.h>
-#include <linux/spinlock.h>
-
-/*
- * Cache-SRAM
- */
-
-struct mpc85xx_cache_sram {
- phys_addr_t base_phys;
- void *base_virt;
- unsigned int size;
- rh_info_t *rh;
- spinlock_t lock;
-};
-
-extern void mpc85xx_cache_sram_free(void *ptr);
-extern void *mpc85xx_cache_sram_alloc(unsigned int size,
- phys_addr_t *phys, unsigned int align);
-
-#endif /* __AMS_POWERPC_FSL_85XX_CACHE_SRAM_H__ */
if PPC32
-config FSL_85XX_CACHE_SRAM
- bool
- select PPC_LIB_RHEAP
- help
- When selected, this option enables cache-sram support
- for memory allocation on P1/P2 QorIQ platforms.
- cache-sram-size and cache-sram-offset kernel boot
- parameters should be passed when this option is enabled.
-
config BSC9131_RDB
bool "Freescale BSC9131RDB"
select DEFAULT_UIMAGE
obj-$(CONFIG_FSL_CORENET_RCPM) += fsl_rcpm.o
obj-$(CONFIG_FSL_LBC) += fsl_lbc.o
obj-$(CONFIG_FSL_GTM) += fsl_gtm.o
-obj-$(CONFIG_FSL_85XX_CACHE_SRAM) += fsl_85xx_l2ctlr.o fsl_85xx_cache_sram.o
obj-$(CONFIG_FSL_RIO) += fsl_rio.o fsl_rmu.o
obj-$(CONFIG_TSI108_BRIDGE) += tsi108_pci.o tsi108_dev.o
obj-$(CONFIG_RTC_DRV_CMOS) += rtc_cmos_setup.o
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright 2009-2010, 2012 Freescale Semiconductor, Inc
- *
- * QorIQ based Cache Controller Memory Mapped Registers
- *
- * Author: Vivek Mahajan <vivek.mahajan@freescale.com>
- */
-
-#ifndef __FSL_85XX_CACHE_CTLR_H__
-#define __FSL_85XX_CACHE_CTLR_H__
-
-#define L2CR_L2FI 0x40000000 /* L2 flash invalidate */
-#define L2CR_L2IO 0x00200000 /* L2 instruction only */
-#define L2CR_SRAM_ZERO 0x00000000 /* L2SRAM zero size */
-#define L2CR_SRAM_FULL 0x00010000 /* L2SRAM full size */
-#define L2CR_SRAM_HALF 0x00020000 /* L2SRAM half size */
-#define L2CR_SRAM_TWO_HALFS 0x00030000 /* L2SRAM two half sizes */
-#define L2CR_SRAM_QUART 0x00040000 /* L2SRAM one quarter size */
-#define L2CR_SRAM_TWO_QUARTS 0x00050000 /* L2SRAM two quarter size */
-#define L2CR_SRAM_EIGHTH 0x00060000 /* L2SRAM one eighth size */
-#define L2CR_SRAM_TWO_EIGHTH 0x00070000 /* L2SRAM two eighth size */
-
-#define L2SRAM_OPTIMAL_SZ_SHIFT 0x00000003 /* Optimum size for L2SRAM */
-
-#define L2SRAM_BAR_MSK_LO18 0xFFFFC000 /* Lower 18 bits */
-#define L2SRAM_BARE_MSK_HI4 0x0000000F /* Upper 4 bits */
-
-enum cache_sram_lock_ways {
- LOCK_WAYS_ZERO,
- LOCK_WAYS_EIGHTH,
- LOCK_WAYS_TWO_EIGHTH,
- LOCK_WAYS_HALF = 4,
- LOCK_WAYS_FULL = 8,
-};
-
-struct mpc85xx_l2ctlr {
- u32 ctl; /* 0x000 - L2 control */
- u8 res1[0xC];
- u32 ewar0; /* 0x010 - External write address 0 */
- u32 ewarea0; /* 0x014 - External write address extended 0 */
- u32 ewcr0; /* 0x018 - External write ctrl */
- u8 res2[4];
- u32 ewar1; /* 0x020 - External write address 1 */
- u32 ewarea1; /* 0x024 - External write address extended 1 */
- u32 ewcr1; /* 0x028 - External write ctrl 1 */
- u8 res3[4];
- u32 ewar2; /* 0x030 - External write address 2 */
- u32 ewarea2; /* 0x034 - External write address extended 2 */
- u32 ewcr2; /* 0x038 - External write ctrl 2 */
- u8 res4[4];
- u32 ewar3; /* 0x040 - External write address 3 */
- u32 ewarea3; /* 0x044 - External write address extended 3 */
- u32 ewcr3; /* 0x048 - External write ctrl 3 */
- u8 res5[0xB4];
- u32 srbar0; /* 0x100 - SRAM base address 0 */
- u32 srbarea0; /* 0x104 - SRAM base addr reg ext address 0 */
- u32 srbar1; /* 0x108 - SRAM base address 1 */
- u32 srbarea1; /* 0x10C - SRAM base addr reg ext address 1 */
- u8 res6[0xCF0];
- u32 errinjhi; /* 0xE00 - Error injection mask high */
- u32 errinjlo; /* 0xE04 - Error injection mask low */
- u32 errinjctl; /* 0xE08 - Error injection tag/ecc control */
- u8 res7[0x14];
- u32 captdatahi; /* 0xE20 - Error data high capture */
- u32 captdatalo; /* 0xE24 - Error data low capture */
- u32 captecc; /* 0xE28 - Error syndrome */
- u8 res8[0x14];
- u32 errdet; /* 0xE40 - Error detect */
- u32 errdis; /* 0xE44 - Error disable */
- u32 errinten; /* 0xE48 - Error interrupt enable */
- u32 errattr; /* 0xE4c - Error attribute capture */
- u32 erradrrl; /* 0xE50 - Error address capture low */
- u32 erradrrh; /* 0xE54 - Error address capture high */
- u32 errctl; /* 0xE58 - Error control */
- u8 res9[0x1A4];
-};
-
-struct sram_parameters {
- unsigned int sram_size;
- phys_addr_t sram_offset;
-};
-
-extern int instantiate_cache_sram(struct platform_device *dev,
- struct sram_parameters sram_params);
-extern void remove_cache_sram(struct platform_device *dev);
-
-#endif /* __FSL_85XX_CACHE_CTLR_H__ */
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright 2009-2010 Freescale Semiconductor, Inc.
- *
- * Simple memory allocator abstraction for QorIQ (P1/P2) based Cache-SRAM
- *
- * Author: Vivek Mahajan <vivek.mahajan@freescale.com>
- *
- * This file is derived from the original work done
- * by Sylvain Munaut for the Bestcomm SRAM allocator.
- */
-
-#include <linux/kernel.h>
-#include <linux/export.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/of_platform.h>
-#include <linux/pgtable.h>
-#include <asm/fsl_85xx_cache_sram.h>
-
-#include "fsl_85xx_cache_ctlr.h"
-
-struct mpc85xx_cache_sram *cache_sram;
-
-void *mpc85xx_cache_sram_alloc(unsigned int size,
- phys_addr_t *phys, unsigned int align)
-{
- unsigned long offset;
- unsigned long flags;
-
- if (unlikely(cache_sram == NULL))
- return NULL;
-
- if (!size || (size > cache_sram->size) || (align > cache_sram->size)) {
- pr_err("%s(): size(=%x) or align(=%x) zero or too big\n",
- __func__, size, align);
- return NULL;
- }
-
- if ((align & (align - 1)) || align <= 1) {
- pr_err("%s(): align(=%x) must be power of two and >1\n",
- __func__, align);
- return NULL;
- }
-
- spin_lock_irqsave(&cache_sram->lock, flags);
- offset = rh_alloc_align(cache_sram->rh, size, align, NULL);
- spin_unlock_irqrestore(&cache_sram->lock, flags);
-
- if (IS_ERR_VALUE(offset))
- return NULL;
-
- *phys = cache_sram->base_phys + offset;
-
- return (unsigned char *)cache_sram->base_virt + offset;
-}
-EXPORT_SYMBOL(mpc85xx_cache_sram_alloc);
-
-void mpc85xx_cache_sram_free(void *ptr)
-{
- unsigned long flags;
- BUG_ON(!ptr);
-
- spin_lock_irqsave(&cache_sram->lock, flags);
- rh_free(cache_sram->rh, ptr - cache_sram->base_virt);
- spin_unlock_irqrestore(&cache_sram->lock, flags);
-}
-EXPORT_SYMBOL(mpc85xx_cache_sram_free);
-
-int __init instantiate_cache_sram(struct platform_device *dev,
- struct sram_parameters sram_params)
-{
- int ret = 0;
-
- if (cache_sram) {
- dev_err(&dev->dev, "Already initialized cache-sram\n");
- return -EBUSY;
- }
-
- cache_sram = kzalloc(sizeof(struct mpc85xx_cache_sram), GFP_KERNEL);
- if (!cache_sram) {
- dev_err(&dev->dev, "Out of memory for cache_sram structure\n");
- return -ENOMEM;
- }
-
- cache_sram->base_phys = sram_params.sram_offset;
- cache_sram->size = sram_params.sram_size;
-
- if (!request_mem_region(cache_sram->base_phys, cache_sram->size,
- "fsl_85xx_cache_sram")) {
- dev_err(&dev->dev, "%pOF: request memory failed\n",
- dev->dev.of_node);
- ret = -ENXIO;
- goto out_free;
- }
-
- cache_sram->base_virt = ioremap_coherent(cache_sram->base_phys,
- cache_sram->size);
- if (!cache_sram->base_virt) {
- dev_err(&dev->dev, "%pOF: ioremap_coherent failed\n",
- dev->dev.of_node);
- ret = -ENOMEM;
- goto out_release;
- }
-
- cache_sram->rh = rh_create(sizeof(unsigned int));
- if (IS_ERR(cache_sram->rh)) {
- dev_err(&dev->dev, "%pOF: Unable to create remote heap\n",
- dev->dev.of_node);
- ret = PTR_ERR(cache_sram->rh);
- goto out_unmap;
- }
-
- rh_attach_region(cache_sram->rh, 0, cache_sram->size);
- spin_lock_init(&cache_sram->lock);
-
- dev_info(&dev->dev, "[base:0x%llx, size:0x%x] configured and loaded\n",
- (unsigned long long)cache_sram->base_phys, cache_sram->size);
-
- return 0;
-
-out_unmap:
- iounmap(cache_sram->base_virt);
-
-out_release:
- release_mem_region(cache_sram->base_phys, cache_sram->size);
-
-out_free:
- kfree(cache_sram);
- return ret;
-}
-
-void remove_cache_sram(struct platform_device *dev)
-{
- BUG_ON(!cache_sram);
-
- rh_detach_region(cache_sram->rh, 0, cache_sram->size);
- rh_destroy(cache_sram->rh);
-
- iounmap(cache_sram->base_virt);
- release_mem_region(cache_sram->base_phys, cache_sram->size);
-
- kfree(cache_sram);
- cache_sram = NULL;
-
- dev_info(&dev->dev, "MPC85xx Cache-SRAM driver unloaded\n");
-}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright 2009-2010, 2012 Freescale Semiconductor, Inc.
- *
- * QorIQ (P1/P2) L2 controller init for Cache-SRAM instantiation
- *
- * Author: Vivek Mahajan <vivek.mahajan@freescale.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/of_platform.h>
-#include <asm/io.h>
-
-#include "fsl_85xx_cache_ctlr.h"
-
-static char *sram_size;
-static char *sram_offset;
-struct mpc85xx_l2ctlr __iomem *l2ctlr;
-
-static int get_cache_sram_params(struct sram_parameters *sram_params)
-{
- unsigned long long addr;
- unsigned int size;
-
- if (!sram_size || (kstrtouint(sram_size, 0, &size) < 0))
- return -EINVAL;
-
- if (!sram_offset || (kstrtoull(sram_offset, 0, &addr) < 0))
- return -EINVAL;
-
- sram_params->sram_offset = addr;
- sram_params->sram_size = size;
-
- return 0;
-}
-
-static int __init get_size_from_cmdline(char *str)
-{
- if (!str)
- return 0;
-
- sram_size = str;
- return 1;
-}
-
-static int __init get_offset_from_cmdline(char *str)
-{
- if (!str)
- return 0;
-
- sram_offset = str;
- return 1;
-}
-
-__setup("cache-sram-size=", get_size_from_cmdline);
-__setup("cache-sram-offset=", get_offset_from_cmdline);
-
-static int mpc85xx_l2ctlr_of_probe(struct platform_device *dev)
-{
- long rval;
- unsigned int rem;
- unsigned char ways;
- const unsigned int *prop;
- unsigned int l2cache_size;
- struct sram_parameters sram_params;
-
- if (!dev->dev.of_node) {
- dev_err(&dev->dev, "Device's OF-node is NULL\n");
- return -EINVAL;
- }
-
- prop = of_get_property(dev->dev.of_node, "cache-size", NULL);
- if (!prop) {
- dev_err(&dev->dev, "Missing L2 cache-size\n");
- return -EINVAL;
- }
- l2cache_size = *prop;
-
- if (get_cache_sram_params(&sram_params))
- return 0; /* fall back to L2 cache only */
-
- rem = l2cache_size % sram_params.sram_size;
- ways = LOCK_WAYS_FULL * sram_params.sram_size / l2cache_size;
- if (rem || (ways & (ways - 1))) {
- dev_err(&dev->dev, "Illegal cache-sram-size in command line\n");
- return -EINVAL;
- }
-
- l2ctlr = of_iomap(dev->dev.of_node, 0);
- if (!l2ctlr) {
- dev_err(&dev->dev, "Can't map L2 controller\n");
- return -EINVAL;
- }
-
- /*
- * Write bits[0-17] to srbar0
- */
- out_be32(&l2ctlr->srbar0,
- lower_32_bits(sram_params.sram_offset) & L2SRAM_BAR_MSK_LO18);
-
- /*
- * Write bits[18-21] to srbare0
- */
-#ifdef CONFIG_PHYS_64BIT
- out_be32(&l2ctlr->srbarea0,
- upper_32_bits(sram_params.sram_offset) & L2SRAM_BARE_MSK_HI4);
-#endif
-
- clrsetbits_be32(&l2ctlr->ctl, L2CR_L2E, L2CR_L2FI);
-
- switch (ways) {
- case LOCK_WAYS_EIGHTH:
- setbits32(&l2ctlr->ctl,
- L2CR_L2E | L2CR_L2FI | L2CR_SRAM_EIGHTH);
- break;
-
- case LOCK_WAYS_TWO_EIGHTH:
- setbits32(&l2ctlr->ctl,
- L2CR_L2E | L2CR_L2FI | L2CR_SRAM_QUART);
- break;
-
- case LOCK_WAYS_HALF:
- setbits32(&l2ctlr->ctl,
- L2CR_L2E | L2CR_L2FI | L2CR_SRAM_HALF);
- break;
-
- case LOCK_WAYS_FULL:
- default:
- setbits32(&l2ctlr->ctl,
- L2CR_L2E | L2CR_L2FI | L2CR_SRAM_FULL);
- break;
- }
- eieio();
-
- rval = instantiate_cache_sram(dev, sram_params);
- if (rval < 0) {
- dev_err(&dev->dev, "Can't instantiate Cache-SRAM\n");
- iounmap(l2ctlr);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int mpc85xx_l2ctlr_of_remove(struct platform_device *dev)
-{
- BUG_ON(!l2ctlr);
-
- iounmap(l2ctlr);
- remove_cache_sram(dev);
- dev_info(&dev->dev, "MPC85xx L2 controller unloaded\n");
-
- return 0;
-}
-
-static const struct of_device_id mpc85xx_l2ctlr_of_match[] = {
- {
- .compatible = "fsl,p2020-l2-cache-controller",
- },
- {
- .compatible = "fsl,p2010-l2-cache-controller",
- },
- {
- .compatible = "fsl,p1020-l2-cache-controller",
- },
- {
- .compatible = "fsl,p1011-l2-cache-controller",
- },
- {
- .compatible = "fsl,p1013-l2-cache-controller",
- },
- {
- .compatible = "fsl,p1022-l2-cache-controller",
- },
- {
- .compatible = "fsl,mpc8548-l2-cache-controller",
- },
- { .compatible = "fsl,mpc8544-l2-cache-controller",},
- { .compatible = "fsl,mpc8572-l2-cache-controller",},
- { .compatible = "fsl,mpc8536-l2-cache-controller",},
- { .compatible = "fsl,p1021-l2-cache-controller",},
- { .compatible = "fsl,p1012-l2-cache-controller",},
- { .compatible = "fsl,p1025-l2-cache-controller",},
- { .compatible = "fsl,p1016-l2-cache-controller",},
- { .compatible = "fsl,p1024-l2-cache-controller",},
- { .compatible = "fsl,p1015-l2-cache-controller",},
- { .compatible = "fsl,p1010-l2-cache-controller",},
- { .compatible = "fsl,bsc9131-l2-cache-controller",},
- {},
-};
-
-static struct platform_driver mpc85xx_l2ctlr_of_platform_driver = {
- .driver = {
- .name = "fsl-l2ctlr",
- .of_match_table = mpc85xx_l2ctlr_of_match,
- },
- .probe = mpc85xx_l2ctlr_of_probe,
- .remove = mpc85xx_l2ctlr_of_remove,
-};
-
-static __init int mpc85xx_l2ctlr_of_init(void)
-{
- return platform_driver_register(&mpc85xx_l2ctlr_of_platform_driver);
-}
-
-static void __exit mpc85xx_l2ctlr_of_exit(void)
-{
- platform_driver_unregister(&mpc85xx_l2ctlr_of_platform_driver);
-}
-
-subsys_initcall(mpc85xx_l2ctlr_of_init);
-module_exit(mpc85xx_l2ctlr_of_exit);
-
-MODULE_DESCRIPTION("Freescale MPC85xx L2 controller init");
-MODULE_LICENSE("GPL v2");
projects / kernel.git / commitdiff