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author | Wolfgang Denk <wd@denx.de> | 2011-10-04 20:08:13 (GMT) |
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committer | Wolfgang Denk <wd@denx.de> | 2011-10-04 20:08:13 (GMT) |
commit | 1fed668b3fb9c35932f58af00ff5539239fa4e1d (patch) | |
tree | eaaaead8ca19924af1823caae040f504be9b6d98 /arch/powerpc/cpu/mpc83xx/law.c | |
parent | c52575350fd6e794717f6bee4f81dbb8038fe22e (diff) | |
parent | 6d7b061af153bc5beb633c3bd15348284716a067 (diff) | |
download | u-boot-fsl-qoriq-1fed668b3fb9c35932f58af00ff5539239fa4e1d.tar.xz |
Merge branch 'master' of git://git.denx.de/u-boot-mpc85xx
* 'master' of git://git.denx.de/u-boot-mpc85xx:
powerpc/p3060: Add SoC related support for P3060 platform
powerpc/85xx: Add support for setting up RAID engine liodns on P5020
powerpc/85xx: Refactor some defines out of corenet_ds.h
fm-eth: Add ability for board code to disable a port
powerpc/mpc8548: Add workaround for erratum NMG_LBC103
powerpc/mpc8548: Add workaround for erratum NMG_DDR120
powerpc/mpc85xxcds: Fix PCI speed
powerpc/mpc8548cds: Fix booting message
powerpc/p4080: Add support for secure boot flow
powerpc/85xx: Add Secure Boot support on P1010RDB for NOR, NAND & SPIFLASH
powerpc/85xx: Add PBL & SECUREBOOT support on P3041/P5020DS boards
powerpc/p2041rdb: remove watch dog related codes
powerpc/p2041rdb: updated description of cpld command
powerpc/p2041rdb: add more ddr frequencies support
powerpc/p2041rdb: set sysclk according to status of physical switch SW1
powerpc/p2041rdb: update cpld reset command according to CPLD 2.0
powerpc/mpc8349emds: Migrate from spd_sdram to unified DDR driver
powerpc/mpc83xx: Migrate from spd_sdram to unified DDR driver
powerpc/mpc8xxx: Add DDR2 to unified DDR driver
powerpc/mpc8xxx: Fix picos_to_mclk() and get_memory_clk_period_ps()
powerpc/mpc8xxx: Add SPD EEPROM address for single controller 2 slots
powerpc/mpc8xxx: Fix DDR code for empty first DIMM slot and enable DQS_en
powerpc/85xx: Refactor P2041RDB to use common p_corenet files
powerpc/85xx: refactor common P-Series CoreNet files for FSL boards
powerpc/85xx: Enable CMD_REGINFO on corenet boards
powerpc/85xx: p2041rdb - Remove unused 'execute' perm in TLB entries
powerpc/85xx: Fix USB protocol definitions for P1020RDB
powerpc/corenet_ds: Use separated speed tables for UDIMM and RDIMM
powerpc/mpc8xxx: Move DDR RCW overriding to common code
powerpc/mpc8xxx: Extend CWL table
powerpc/85xx: Cleanup how SVR_MAJ() is defined on MPC8536
powerpc/85xx: Cleanup extern in corenet_ds board code
powerpc/p2041rdb: Add ethernet support on P2041RDB board
powerpc/85xx: Add networking support to P1023RDS
powerpc/hydra: Add ethernet support on P5020/P3041 DS boards
powerpc/85xx: Add FMan ethernet support to P4080DS
powerpc/85xx: Add support for FMan ethernet in Independent mode
powerpc/mpc8548cds: Cleanup mpc8548cds.c
powerpc/mp: add support for discontiguous cores
powerpc/85xx: corenet_ds - Remove unused 'execute' perm in TLB entries
fdt: Add new fdt_create_phandle helper
fdt: Rename fdt_create_phandle to fdt_set_phandle
powerpc/85xx: Fix compile warnings/errors if CONFIG_SYS_DPAA_FMAN isn't set
fsl_ifc: Add the workaround for erratum IFC A-003399(enabled on P1010)
powerpc/P1010: Add workaround for erratum P1010-A003549 (related to IFC)
fsl_ifc: Add the workaround for erratum IFC-A002769 (enable on P1010)
powerpc/85xx: Expanding the window of CCSRBAR in AS=1 from 4k to 1M
powerpc/85xx: Add NAND/NAND_SPL support to P1010RDB
nand: Freescale Integrated Flash Controller NAND support
powerpc/85xx: Add basic support for P1010RDB
powerpc/85xx: Add support for new P102x/P2020 RDB style boards
powerpc/85xx: relocate CCSR before creating the initial RAM area
powerpc/85xx: introduce and document CONFIG_SYS_CCSRBAR macros
powerpc/85xx: Enable internal USB UTMI PHY on p204x/p3041/p50x0
powerpc/85xx: Add ULPI and UTMI USB Phy support for P1010/P1014
Diffstat (limited to 'arch/powerpc/cpu/mpc83xx/law.c')
-rw-r--r-- | arch/powerpc/cpu/mpc83xx/law.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc83xx/law.c b/arch/powerpc/cpu/mpc83xx/law.c new file mode 100644 index 0000000..66c88b6 --- /dev/null +++ b/arch/powerpc/cpu/mpc83xx/law.c @@ -0,0 +1,61 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * Version 2 as published by the Free Software Foundation. + */ + +#include <common.h> +#include <asm/fsl_law.h> +#include <asm/mmu.h> + +int set_ddr_laws(u64 start, u64 sz, enum law_trgt_if id) +{ + immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + law83xx_t *ecm = &immap->sysconf.ddrlaw[0]; + u64 start_align, law_sz; + int law_sz_enc; + + if (start == 0) + start_align = 1ull << (LAW_SIZE_2G + 1); + else + start_align = 1ull << (ffs64(start) - 1); + law_sz = min(start_align, sz); + law_sz_enc = __ilog2_u64(law_sz) - 1; + + /* + * Set up LAWBAR for all of DDR. + */ + ecm->bar = start & 0xfffff000; + ecm->ar = (LAWAR_EN | (id << 20) | (LAWAR_SIZE & law_sz_enc)); + debug("DDR:bar=0x%08x\n", ecm->bar); + debug("DDR:ar=0x%08x\n", ecm->ar); + + /* recalculate size based on what was actually covered by the law */ + law_sz = 1ull << __ilog2_u64(law_sz); + + /* do we still have anything to map */ + sz = sz - law_sz; + if (sz) { + start += law_sz; + + start_align = 1ull << (ffs64(start) - 1); + law_sz = min(start_align, sz); + law_sz_enc = __ilog2_u64(law_sz) - 1; + ecm = &immap->sysconf.ddrlaw[1]; + ecm->bar = start & 0xfffff000; + ecm->ar = (LAWAR_EN | (id << 20) | (LAWAR_SIZE & law_sz_enc)); + debug("DDR:bar=0x%08x\n", ecm->bar); + debug("DDR:ar=0x%08x\n", ecm->ar); + } else { + return 0; + } + + /* do we still have anything to map */ + sz = sz - law_sz; + if (sz) + return 1; + + return 0; +} |