diff options
Diffstat (limited to 'arch_msm7k/clock.c')
| -rw-r--r-- | arch_msm7k/clock.c | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/arch_msm7k/clock.c b/arch_msm7k/clock.c deleted file mode 100644 index 0bb0926..0000000 --- a/arch_msm7k/clock.c +++ /dev/null @@ -1,274 +0,0 @@ -/* - * Copyright (c) 2008, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <boot/boot.h> -#include <msm7k/gpt.h> - -static inline unsigned rd_cycle_count(void) -{ - unsigned cc; - asm volatile ( - "mrc p15, 0, %0, c15, c12, 1\n" : - "=r" (cc) - ); - return cc; -} - -static inline unsigned rd_dtcm(void) -{ - unsigned cc; - asm volatile ( - "mrc p15, 0, %0, c9, c1, 0\n" : - "=r" (cc) - ); - return cc; -} - -static inline unsigned rd_itcm(void) -{ - unsigned cc; - asm volatile ( - "mrc p15, 0, %0, c9, c1, 1\n" : - "=r" (cc) - ); - return cc; -} - -static inline void perf_enable(void) -{ - asm volatile ( - "mcr p15, 0, %0, c15, c12, 0\n" : : "r" (7) - ); -} - -static inline void perf_disable(void) -{ - asm volatile ( - "mcr p15, 0, %0, c15, c12, 0\n" : : "r" (0) - ); -} - -unsigned cycles_per_second(void) -{ - unsigned T0, T1; - - perf_enable(); - - writel(0, GPT_CLEAR); - writel(0, GPT_ENABLE); - while(readl(GPT_COUNT_VAL) != 0) ; - - writel(GPT_ENABLE_EN, GPT_ENABLE); - T0 = rd_cycle_count(); - while(readl(GPT_COUNT_VAL) < 32766) ; - T1 = rd_cycle_count(); - - writel(0, GPT_ENABLE); - writel(0, GPT_CLEAR); - - perf_disable(); - - return T1-T0; -} - -void mdelay(unsigned msecs) -{ - msecs *= 33; - - writel(0, GPT_CLEAR); - writel(0, GPT_ENABLE); - while(readl(GPT_COUNT_VAL) != 0) ; - - writel(GPT_ENABLE_EN, GPT_ENABLE); - while(readl(GPT_COUNT_VAL) < msecs) ; - - writel(0, GPT_ENABLE); - writel(0, GPT_CLEAR); -} - -void udelay(unsigned usecs) -{ - usecs = (usecs * 33 + 1000 - 33) / 1000; - - writel(0, GPT_CLEAR); - writel(0, GPT_ENABLE); - while(readl(GPT_COUNT_VAL) != 0) ; - - writel(GPT_ENABLE_EN, GPT_ENABLE); - while(readl(GPT_COUNT_VAL) < usecs) ; - - writel(0, GPT_ENABLE); - writel(0, GPT_CLEAR); -} - -void print_cpu_speed(void) -{ - unsigned cps = cycles_per_second(); - dprintf("1 second = %d cycles\n%d MHz\n", cps, cps / 1000000); -} - -#define A11S_CLK_CNTL 0xC0100100 -#define A11S_CLK_SEL 0xC0100104 - -#define C A11S_CLK_CNTL -#define S A11S_CLK_SEL - -#if FROM_APPSBOOT_MBN -static unsigned tbl_old[] = { - C, 0x640000, - S, 2, - C, 0x640010, - C, 0x64001F, - S, 3, - C, 0x64101F, - C, 0x64171F, - S, 2, - C, 0x64171F, - C, 0x641715, - S, 3, - S, 5, - C, 0x641715, - C, 0x641315, - S, 4, - S, 6, - C, 0x641315, - C, 0x641312, - S, 7, - C, 0x641312, - C, 0x641112, - S, 6, - 0 -}; -#endif - -static unsigned tbl[] = { -#if EXPLORE - C, 0x640000, S, 2, - C, 0x640001, S, 3, - C, 0x640201, S, 2, - C, 0x640203, S, 3, - C, 0x640403, S, 2, - C, 0x640405, S, 3, - C, 0x640605, S, 2, - C, 0x640607, S, 3, - C, 0x640807, S, 2, - C, 0x640809, S, 3, - C, 0x640A09, S, 2, - C, 0x640A0B, S, 3, - C, 0x640C0B, S, 2, - C, 0x640C0D, S, 3, - C, 0x640E0D, S, 2, - C, 0x640E0F, S, 3, -#endif - C, 0x640000, S, 2, - C, 0x64001F, S, 3, - C, 0x64171F, S, 2, - C, 0x641715, S, 5, - C, 0x641315, S, 6, - C, 0x641312, S, 7, - C, 0x641112, S, 6, - 0 -}; -#undef C -#undef S - -#if TESTCASE -unsigned cc_div[16] = { - 1, 2, 3, 4, 5, 8, 6, 16, - 1, 1, 1, 1, 1, 1, 1, 32 /* guess */ -}; - -unsigned cc_base[4] = { - 19200000, - 245760000, - 800000000, - 0 -}; - -unsigned cs_div[4] = { - 1, 2, 3, 4 -}; - -void info(unsigned c, unsigned s) -{ - unsigned src_sel, src_div; - - if(s & 1) { - /* src1 selected */ - src_sel = (c >> 4) & 0x7; - src_div = c & 0xF; - } else { - /* src0 selected */ - src_sel = (c >> 12) & 0x7; - src_div = (c >> 8) & 0xF; - } - - unsigned src = s & 1; - unsigned pdiv = cs_div[(s >> 1) & 3]; - unsigned div = cc_div[src_div]; - unsigned clk = cc_base[src_sel] / div; - unsigned pclk = clk / pdiv; - - unsigned cps = cycles_per_second(); - - dprintf("CC=0x%x CS=0x%x SRC=%d PDIV=%d SEL=%d DIV=%d CPS=%d ACLK=%d\n", - c, s, src, pdiv, src_sel, div, cps, clk); -} - - -void arm11_clock_test(void) -{ - unsigned c, s; - unsigned *x = tbl; - - while(*x) { - unsigned *ptr = (unsigned*) *x++; - unsigned val = *x++; - *ptr = val; - - if(ptr == ((unsigned*) A11S_CLK_CNTL)) { - c = val; - } else { - s = val; - info(c, s); - } - } -} -#endif - -void arm11_clock_init(void) -{ - unsigned *x = tbl; - while(*x) { - unsigned *ptr = (unsigned*) *x++; - unsigned val = *x++; - *ptr = val; - } -} - - |