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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-10 07:21:16 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-10 07:21:16 -0700 |
commit | f5b8fcb48b9eb1a02f6a3a679da913f6c467527c (patch) | |
tree | 4e67c46f5ebc0acf8c29ce01c711b84352a617f3 /arch/blackfin/kernel | |
parent | a1f0bcccffe508b36f8eb0bd39771d4bedc683a8 (diff) | |
parent | 5ae89ee043ce96e3790e6c75f3807c8e37d98634 (diff) | |
download | lwn-f5b8fcb48b9eb1a02f6a3a679da913f6c467527c.tar.gz lwn-f5b8fcb48b9eb1a02f6a3a679da913f6c467527c.zip |
Merge tag 'for-linus' of git://github.com/realmz/blackfin-linux
Pull blackfin updates from Steven Miao.
* tag 'for-linus' of git://github.com/realmz/blackfin-linux:
bfin cache: dcplb map: add 16M dcplb map for BF60x
blackfin: smp: fix smp build after drop asm/system.h
blackfin: fix bootup core clock and system clock display
Platform Nand: Set the GPIO for NAND read as input
blackfin: rename vmImage to uImage after we move to buildroot
blackfin: twi: Remove bogus #endif
bf609: rsi: Add bf609 rsi MMR macro and board platform data.
blackfin: dmc: Improve DDR2 write through in DMC effict controller.
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r-- | arch/blackfin/kernel/cplb-nompu/cplbinit.c | 16 | ||||
-rw-r--r-- | arch/blackfin/kernel/cplb-nompu/cplbmgr.c | 27 | ||||
-rw-r--r-- | arch/blackfin/kernel/cplbinfo.c | 9 | ||||
-rw-r--r-- | arch/blackfin/kernel/setup.c | 2 |
4 files changed, 44 insertions, 10 deletions
diff --git a/arch/blackfin/kernel/cplb-nompu/cplbinit.c b/arch/blackfin/kernel/cplb-nompu/cplbinit.c index 34e96ce02aa9..b49a53b583d5 100644 --- a/arch/blackfin/kernel/cplb-nompu/cplbinit.c +++ b/arch/blackfin/kernel/cplb-nompu/cplbinit.c @@ -30,6 +30,7 @@ void __init generate_cplb_tables_cpu(unsigned int cpu) { int i_d, i_i; unsigned long addr; + unsigned long cplb_pageflags, cplb_pagesize; struct cplb_entry *d_tbl = dcplb_tbl[cpu]; struct cplb_entry *i_tbl = icplb_tbl[cpu]; @@ -49,11 +50,20 @@ void __init generate_cplb_tables_cpu(unsigned int cpu) /* Cover kernel memory with 4M pages. */ addr = 0; - for (; addr < memory_start; addr += 4 * 1024 * 1024) { +#ifdef PAGE_SIZE_16MB + cplb_pageflags = PAGE_SIZE_16MB; + cplb_pagesize = SIZE_16M; +#else + cplb_pageflags = PAGE_SIZE_4MB; + cplb_pagesize = SIZE_4M; +#endif + + + for (; addr < memory_start; addr += cplb_pagesize) { d_tbl[i_d].addr = addr; - d_tbl[i_d++].data = SDRAM_DGENERIC | PAGE_SIZE_4MB; + d_tbl[i_d++].data = SDRAM_DGENERIC | cplb_pageflags; i_tbl[i_i].addr = addr; - i_tbl[i_i++].data = SDRAM_IGENERIC | PAGE_SIZE_4MB; + i_tbl[i_i++].data = SDRAM_IGENERIC | cplb_pageflags; } #ifdef CONFIG_ROMKERNEL diff --git a/arch/blackfin/kernel/cplb-nompu/cplbmgr.c b/arch/blackfin/kernel/cplb-nompu/cplbmgr.c index e854f9066cbd..79cc0f6dcdd5 100644 --- a/arch/blackfin/kernel/cplb-nompu/cplbmgr.c +++ b/arch/blackfin/kernel/cplb-nompu/cplbmgr.c @@ -145,7 +145,7 @@ MGR_ATTR static int dcplb_miss(int cpu) unsigned long addr = bfin_read_DCPLB_FAULT_ADDR(); int status = bfin_read_DCPLB_STATUS(); int idx; - unsigned long d_data, base, addr1, eaddr; + unsigned long d_data, base, addr1, eaddr, cplb_pagesize, cplb_pageflags; nr_dcplb_miss[cpu]++; if (unlikely(status & FAULT_USERSUPV)) @@ -167,18 +167,37 @@ MGR_ATTR static int dcplb_miss(int cpu) if (unlikely(d_data == 0)) return CPLB_NO_ADDR_MATCH; - addr1 = addr & ~(SIZE_4M - 1); addr &= ~(SIZE_1M - 1); d_data |= PAGE_SIZE_1MB; - if (addr1 >= base && (addr1 + SIZE_4M) <= eaddr) { + + /* BF60x support large than 4M CPLB page size */ +#ifdef PAGE_SIZE_16MB + cplb_pageflags = PAGE_SIZE_16MB; + cplb_pagesize = SIZE_16M; +#else + cplb_pageflags = PAGE_SIZE_4MB; + cplb_pagesize = SIZE_4M; +#endif + +find_pagesize: + addr1 = addr & ~(cplb_pagesize - 1); + if (addr1 >= base && (addr1 + cplb_pagesize) <= eaddr) { /* * This works because * (PAGE_SIZE_4MB & PAGE_SIZE_1MB) == PAGE_SIZE_1MB. */ - d_data |= PAGE_SIZE_4MB; + d_data |= cplb_pageflags; addr = addr1; + goto found_pagesize; + } else { + if (cplb_pagesize > SIZE_4M) { + cplb_pageflags = PAGE_SIZE_4MB; + cplb_pagesize = SIZE_4M; + goto find_pagesize; + } } +found_pagesize: #ifdef CONFIG_BF60x if ((addr >= ASYNC_BANK0_BASE) && (addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE)) diff --git a/arch/blackfin/kernel/cplbinfo.c b/arch/blackfin/kernel/cplbinfo.c index 404045dcc5e4..5b80d59e66e5 100644 --- a/arch/blackfin/kernel/cplbinfo.c +++ b/arch/blackfin/kernel/cplbinfo.c @@ -17,8 +17,13 @@ #include <asm/cplbinit.h> #include <asm/blackfin.h> -static char const page_strtbl[][3] = { "1K", "4K", "1M", "4M" }; -#define page(flags) (((flags) & 0x30000) >> 16) +static char const page_strtbl[][4] = { + "1K", "4K", "1M", "4M", +#ifdef CONFIG_BF60x + "16K", "64K", "16M", "64M", +#endif +}; +#define page(flags) (((flags) & 0x70000) >> 16) #define strpage(flags) page_strtbl[page(flags)] struct cplbinfo_data { diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index fb96e607adcf..107b306b06f1 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -1314,7 +1314,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) seq_printf(m, "(Compiled for Rev %d)", bfin_compiled_revid()); } - seq_printf(m, "\ncpu MHz\t\t: %lu.%03lu/%lu.%03lu\n", + seq_printf(m, "\ncpu MHz\t\t: %lu.%06lu/%lu.%06lu\n", cclk/1000000, cclk%1000000, sclk/1000000, sclk%1000000); seq_printf(m, "bogomips\t: %lu.%02lu\n" |