diff options
| -rw-r--r-- | cpu/arm_cortexa8/omap3/clock.c | 381 | ||||
| -rw-r--r-- | cpu/arm_cortexa8/omap3/lowlevel_init.S | 361 | ||||
| -rw-r--r-- | cpu/arm_cortexa8/omap3/mem.c | 284 | ||||
| -rw-r--r-- | cpu/arm_cortexa8/omap3/syslib.c | 72 |
4 files changed, 1098 insertions, 0 deletions
diff --git a/cpu/arm_cortexa8/omap3/clock.c b/cpu/arm_cortexa8/omap3/clock.c new file mode 100644 index 0000000..8ac31be --- /dev/null +++ b/cpu/arm_cortexa8/omap3/clock.c @@ -0,0 +1,381 @@ +/* + * (C) Copyright 2008 + * Texas Instruments, <www.ti.com> + * + * Author : + * Manikandan Pillai <mani.pillai@ti.com> + * + * Derived from Beagle Board and OMAP3 SDP code by + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@ti.com> + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/clocks.h> +#include <asm/arch/clocks_omap3.h> +#include <asm/arch/mem.h> +#include <asm/arch/sys_proto.h> +#include <environment.h> +#include <command.h> + +/****************************************************************************** + * get_sys_clk_speed() - determine reference oscillator speed + * based on known 32kHz clock and gptimer. + *****************************************************************************/ +u32 get_osc_clk_speed(void) +{ + u32 start, cstart, cend, cdiff, val; + prcm_t *prcm_base = (prcm_t *)PRCM_BASE; + prm_t *prm_base = (prm_t *)PRM_BASE; + gptimer_t *gpt1_base = (gptimer_t *)OMAP34XX_GPT1; + s32ktimer_t *s32k_base = (s32ktimer_t *)SYNC_32KTIMER_BASE; + + val = readl(&prm_base->clksrc_ctrl); + + /* If SYS_CLK is being divided by 2, remove for now */ + val = (val & (~SYSCLKDIV_2)) | SYSCLKDIV_1; + writel(val, &prm_base->clksrc_ctrl); + + /* enable timer2 */ + val = readl(&prcm_base->clksel_wkup) | CLKSEL_GPT1; + + /* select sys_clk for GPT1 */ + writel(val, &prcm_base->clksel_wkup); + + /* Enable I and F Clocks for GPT1 */ + val = readl(&prcm_base->iclken_wkup) | EN_GPT1 | EN_32KSYNC; + writel(val, &prcm_base->iclken_wkup); + val = readl(&prcm_base->fclken_wkup) | EN_GPT1; + writel(val, &prcm_base->fclken_wkup); + + writel(0, &gpt1_base->tldr); /* start counting at 0 */ + writel(GPT_EN, &gpt1_base->tclr); /* enable clock */ + + /* enable 32kHz source, determine sys_clk via gauging */ + + /* start time in 20 cycles */ + start = 20 + readl(&s32k_base->s32k_cr); + + /* dead loop till start time */ + while (readl(&s32k_base->s32k_cr) < start); + + /* get start sys_clk count */ + cstart = readl(&gpt1_base->tcrr); + + /* wait for 40 cycles */ + while (readl(&s32k_base->s32k_cr) < (start + 20)) ; + cend = readl(&gpt1_base->tcrr); /* get end sys_clk count */ + cdiff = cend - cstart; /* get elapsed ticks */ + + /* based on number of ticks assign speed */ + if (cdiff > 19000) + return S38_4M; + else if (cdiff > 15200) + return S26M; + else if (cdiff > 13000) + return S24M; + else if (cdiff > 9000) + return S19_2M; + else if (cdiff > 7600) + return S13M; + else + return S12M; +} + +/****************************************************************************** + * get_sys_clkin_sel() - returns the sys_clkin_sel field value based on + * input oscillator clock frequency. + *****************************************************************************/ +void get_sys_clkin_sel(u32 osc_clk, u32 *sys_clkin_sel) +{ + switch(osc_clk) { + case S38_4M: + *sys_clkin_sel = 4; + break; + case S26M: + *sys_clkin_sel = 3; + break; + case S19_2M: + *sys_clkin_sel = 2; + break; + case S13M: + *sys_clkin_sel = 1; + break; + case S12M: + default: + *sys_clkin_sel = 0; + } +} + +/****************************************************************************** + * prcm_init() - inits clocks for PRCM as defined in clocks.h + * called from SRAM, or Flash (using temp SRAM stack). + *****************************************************************************/ +void prcm_init(void) +{ + void (*f_lock_pll) (u32, u32, u32, u32); + int xip_safe, p0, p1, p2, p3; + u32 osc_clk = 0, sys_clkin_sel; + u32 clk_index, sil_index; + prm_t *prm_base = (prm_t *)PRM_BASE; + prcm_t *prcm_base = (prcm_t *)PRCM_BASE; + dpll_param *dpll_param_p; + + f_lock_pll = (void *) ((u32) &_end_vect - (u32) &_start + + SRAM_VECT_CODE); + + xip_safe = is_running_in_sram(); + + /* + * Gauge the input clock speed and find out the sys_clkin_sel + * value corresponding to the input clock. + */ + osc_clk = get_osc_clk_speed(); + get_sys_clkin_sel(osc_clk, &sys_clkin_sel); + + /* set input crystal speed */ + sr32(&prm_base->clksel, 0, 3, sys_clkin_sel); + + /* If the input clock is greater than 19.2M always divide/2 */ + if (sys_clkin_sel > 2) { + /* input clock divider */ + sr32(&prm_base->clksrc_ctrl, 6, 2, 2); + clk_index = sys_clkin_sel / 2; + } else { + /* input clock divider */ + sr32(&prm_base->clksrc_ctrl, 6, 2, 1); + clk_index = sys_clkin_sel; + } + + /* + * The DPLL tables are defined according to sysclk value and + * silicon revision. The clk_index value will be used to get + * the values for that input sysclk from the DPLL param table + * and sil_index will get the values for that SysClk for the + * appropriate silicon rev. + */ + sil_index = get_cpu_rev() - 1; + + /* Unlock MPU DPLL (slows things down, and needed later) */ + sr32(&prcm_base->clken_pll_mpu, 0, 3, PLL_LOW_POWER_BYPASS); + wait_on_value(ST_MPU_CLK, 0, &prcm_base->idlest_pll_mpu, LDELAY); + + /* Getting the base address of Core DPLL param table */ + dpll_param_p = (dpll_param *) get_core_dpll_param(); + + /* Moving it to the right sysclk and ES rev base */ + dpll_param_p = dpll_param_p + 3 * clk_index + sil_index; + if (xip_safe) { + /* + * CORE DPLL + * sr32(CM_CLKSEL2_EMU) set override to work when asleep + */ + sr32(&prcm_base->clken_pll, 0, 3, PLL_FAST_RELOCK_BYPASS); + wait_on_value(ST_CORE_CLK, 0, &prcm_base->idlest_ckgen, + LDELAY); + + /* + * For OMAP3 ES1.0 Errata 1.50, default value directly doesn't + * work. write another value and then default value. + */ + + /* m3x2 */ + sr32(&prcm_base->clksel1_emu, 16, 5, CORE_M3X2 + 1); + /* m3x2 */ + sr32(&prcm_base->clksel1_emu, 16, 5, CORE_M3X2); + /* Set M2 */ + sr32(&prcm_base->clksel1_pll, 27, 2, dpll_param_p->m2); + /* Set M */ + sr32(&prcm_base->clksel1_pll, 16, 11, dpll_param_p->m); + /* Set N */ + sr32(&prcm_base->clksel1_pll, 8, 7, dpll_param_p->n); + /* 96M Src */ + sr32(&prcm_base->clksel1_pll, 6, 1, 0); + /* ssi */ + sr32(&prcm_base->clksel_core, 8, 4, CORE_SSI_DIV); + /* fsusb */ + sr32(&prcm_base->clksel_core, 4, 2, CORE_FUSB_DIV); + /* l4 */ + sr32(&prcm_base->clksel_core, 2, 2, CORE_L4_DIV); + /* l3 */ + sr32(&prcm_base->clksel_core, 0, 2, CORE_L3_DIV); + /* gfx */ + sr32(&prcm_base->clksel_gfx, 0, 3, GFX_DIV); + /* reset mgr */ + sr32(&prcm_base->clksel_wkup, 1, 2, WKUP_RSM); + /* FREQSEL */ + sr32(&prcm_base->clken_pll, 4, 4, dpll_param_p->fsel); + /* lock mode */ + sr32(&prcm_base->clken_pll, 0, 3, PLL_LOCK); + + wait_on_value(ST_CORE_CLK, 1, &prcm_base->idlest_ckgen, + LDELAY); + } else if (is_running_in_flash()) { + /* + * if running from flash, jump to small relocated code + * area in SRAM. + */ + p0 = readl(&prcm_base->clken_pll); + sr32(&p0, 0, 3, PLL_FAST_RELOCK_BYPASS); + sr32(&p0, 4, 4, dpll_param_p->fsel); /* FREQSEL */ + + p1 = readl(&prcm_base->clksel1_pll); + sr32(&p1, 27, 2, dpll_param_p->m2); /* Set M2 */ + sr32(&p1, 16, 11, dpll_param_p->m); /* Set M */ + sr32(&p1, 8, 7, dpll_param_p->n); /* Set N */ + sr32(&p1, 6, 1, 0); /* set source for 96M */ + + p2 = readl(&prcm_base->clksel_core); + sr32(&p2, 8, 4, CORE_SSI_DIV); /* ssi */ + sr32(&p2, 4, 2, CORE_FUSB_DIV); /* fsusb */ + sr32(&p2, 2, 2, CORE_L4_DIV); /* l4 */ + sr32(&p2, 0, 2, CORE_L3_DIV); /* l3 */ + + p3 = (u32)&prcm_base->idlest_ckgen; + + (*f_lock_pll) (p0, p1, p2, p3); + } + + /* PER DPLL */ + sr32(&prcm_base->clken_pll, 16, 3, PLL_STOP); + wait_on_value(ST_PERIPH_CLK, 0, &prcm_base->idlest_ckgen, LDELAY); + + /* Getting the base address to PER DPLL param table */ + + /* Set N */ + dpll_param_p = (dpll_param *) get_per_dpll_param(); + + /* Moving it to the right sysclk base */ + dpll_param_p = dpll_param_p + clk_index; + + /* + * Errata 1.50 Workaround for OMAP3 ES1.0 only + * If using default divisors, write default divisor + 1 + * and then the actual divisor value + */ + sr32(&prcm_base->clksel1_emu, 24, 5, PER_M6X2 + 1); /* set M6 */ + sr32(&prcm_base->clksel1_emu, 24, 5, PER_M6X2); /* set M6 */ + sr32(&prcm_base->clksel_cam, 0, 5, PER_M5X2 + 1); /* set M5 */ + sr32(&prcm_base->clksel_cam, 0, 5, PER_M5X2); /* set M5 */ + sr32(&prcm_base->clksel_dss, 0, 5, PER_M4X2 + 1); /* set M4 */ + sr32(&prcm_base->clksel_dss, 0, 5, PER_M4X2); /* set M4 */ + sr32(&prcm_base->clksel_dss, 8, 5, PER_M3X2 + 1); /* set M3 */ + sr32(&prcm_base->clksel_dss, 8, 5, PER_M3X2); /* set M3 */ + sr32(&prcm_base->clksel3_pll, 0, 5, dpll_param_p->m2 + 1); /* set M2 */ + sr32(&prcm_base->clksel3_pll, 0, 5, dpll_param_p->m2); /* set M2 */ + /* Workaround end */ + + sr32(&prcm_base->clksel2_pll, 8, 11, dpll_param_p->m); /* set m */ + sr32(&prcm_base->clksel2_pll, 0, 7, dpll_param_p->n); /* set n */ + sr32(&prcm_base->clken_pll, 20, 4, dpll_param_p->fsel); /* FREQSEL */ + sr32(&prcm_base->clken_pll, 16, 3, PLL_LOCK); /* lock mode */ + wait_on_value(ST_PERIPH_CLK, 2, &prcm_base->idlest_ckgen, LDELAY); + + /* Getting the base address to MPU DPLL param table */ + dpll_param_p = (dpll_param *) get_mpu_dpll_param(); + + /* Moving it to the right sysclk and ES rev base */ + dpll_param_p = dpll_param_p + 3 * clk_index + sil_index; + + /* MPU DPLL (unlocked already) */ + + /* Set M2 */ + sr32(&prcm_base->clksel2_pll_mpu, 0, 5, dpll_param_p->m2); + /* Set M */ + sr32(&prcm_base->clksel1_pll_mpu, 8, 11, dpll_param_p->m); + /* Set N */ + sr32(&prcm_base->clksel1_pll_mpu, 0, 7, dpll_param_p->n); + /* FREQSEL */ + sr32(&prcm_base->clken_pll_mpu, 4, 4, dpll_param_p->fsel); + /* lock mode */ + sr32(&prcm_base->clken_pll_mpu, 0, 3, PLL_LOCK); + wait_on_value(ST_MPU_CLK, 1, &prcm_base->idlest_pll_mpu, LDELAY); + + /* Getting the base address to IVA DPLL param table */ + dpll_param_p = (dpll_param *) get_iva_dpll_param(); + + /* Moving it to the right sysclk and ES rev base */ + dpll_param_p = dpll_param_p + 3 * clk_index + sil_index; + + /* IVA DPLL (set to 12*20=240MHz) */ + sr32(&prcm_base->clken_pll_iva2, 0, 3, PLL_STOP); + wait_on_value(ST_IVA2_CLK, 0, &prcm_base->idlest_pll_iva2, LDELAY); + /* set M2 */ + sr32(&prcm_base->clksel2_pll_iva2, 0, 5, dpll_param_p->m2); + /* set M */ + sr32(&prcm_base->clksel1_pll_iva2, 8, 11, dpll_param_p->m); + /* set N */ + sr32(&prcm_base->clksel1_pll_iva2, 0, 7, dpll_param_p->n); + /* FREQSEL */ + sr32(&prcm_base->clken_pll_iva2, 4, 4, dpll_param_p->fsel); + /* lock mode */ + sr32(&prcm_base->clken_pll_iva2, 0, 3, PLL_LOCK); + wait_on_value(ST_IVA2_CLK, 1, &prcm_base->idlest_pll_iva2, LDELAY); + + /* Set up GPTimers to sys_clk source only */ + sr32(&prcm_base->clksel_per, 0, 8, 0xff); + sr32(&prcm_base->clksel_wkup, 0, 1, 1); + + sdelay(5000); +} + +/****************************************************************************** + * peripheral_enable() - Enable the clks & power for perifs (GPT2, UART1,...) + *****************************************************************************/ +void per_clocks_enable(void) +{ + prcm_t *prcm_base = (prcm_t *)PRCM_BASE; + + /* Enable GP2 timer. */ + sr32(&prcm_base->clksel_per, 0, 1, 0x1); /* GPT2 = sys clk */ + sr32(&prcm_base->iclken_per, 3, 1, 0x1); /* ICKen GPT2 */ + sr32(&prcm_base->fclken_per, 3, 1, 0x1); /* FCKen GPT2 */ + +#ifdef CONFIG_SYS_NS16550 + /* Enable UART1 clocks */ + sr32(&prcm_base->fclken1_core, 13, 1, 0x1); + sr32(&prcm_base->iclken1_core, 13, 1, 0x1); + + /* UART 3 Clocks */ + sr32(&prcm_base->fclken_per, 11, 1, 0x1); + sr32(&prcm_base->iclken_per, 11, 1, 0x1); +#endif +#ifdef CONFIG_DRIVER_OMAP34XX_I2C + /* Turn on all 3 I2C clocks */ + sr32(&prcm_base->fclken1_core, 15, 3, 0x7); + sr32(&prcm_base->iclken1_core, 15, 3, 0x7); /* I2C1,2,3 = on */ +#endif + /* Enable the ICLK for 32K Sync Timer as its used in udelay */ + sr32(&prcm_base->iclken_wkup, 2, 1, 0x1); + + sr32(&prcm_base->fclken_iva2, 0, 32, FCK_IVA2_ON); + sr32(&prcm_base->fclken1_core, 0, 32, FCK_CORE1_ON); + sr32(&prcm_base->iclken1_core, 0, 32, ICK_CORE1_ON); + sr32(&prcm_base->iclken2_core, 0, 32, ICK_CORE2_ON); + sr32(&prcm_base->fclken_wkup, 0, 32, FCK_WKUP_ON); + sr32(&prcm_base->iclken_wkup, 0, 32, ICK_WKUP_ON); + sr32(&prcm_base->fclken_dss, 0, 32, FCK_DSS_ON); + sr32(&prcm_base->iclken_dss, 0, 32, ICK_DSS_ON); + sr32(&prcm_base->fclken_cam, 0, 32, FCK_CAM_ON); + sr32(&prcm_base->iclken_cam, 0, 32, ICK_CAM_ON); + sr32(&prcm_base->fclken_per, 0, 32, FCK_PER_ON); + sr32(&prcm_base->iclken_per, 0, 32, ICK_PER_ON); + + sdelay(1000); +} diff --git a/cpu/arm_cortexa8/omap3/lowlevel_init.S b/cpu/arm_cortexa8/omap3/lowlevel_init.S new file mode 100644 index 0000000..cf1f927 --- /dev/null +++ b/cpu/arm_cortexa8/omap3/lowlevel_init.S @@ -0,0 +1,361 @@ +/* + * Board specific setup info + * + * (C) Copyright 2008 + * Texas Instruments, <www.ti.com> + * + * Initial Code by: + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@ti.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <config.h> +#include <version.h> +#include <asm/arch/mem.h> +#include <asm/arch/clocks_omap3.h> + +_TEXT_BASE: + .word TEXT_BASE /* sdram load addr from config.mk */ + +#if !defined(CONFIG_SYS_NAND_BOOT) && !defined(CONFIG_SYS_NAND_BOOT) +/************************************************************************** + * cpy_clk_code: relocates clock code into SRAM where its safer to execute + * R1 = SRAM destination address. + *************************************************************************/ +.global cpy_clk_code + cpy_clk_code: + /* Copy DPLL code into SRAM */ + adr r0, go_to_speed /* get addr of clock setting code */ + mov r2, #384 /* r2 size to copy (div by 32 bytes) */ + mov r1, r1 /* r1 <- dest address (passed in) */ + add r2, r2, r0 /* r2 <- source end address */ +next2: + ldmia r0!, {r3 - r10} /* copy from source address [r0] */ + stmia r1!, {r3 - r10} /* copy to target address [r1] */ + cmp r0, r2 /* until source end address [r2] */ + bne next2 + mov pc, lr /* back to caller */ + +/* *************************************************************************** + * go_to_speed: -Moves to bypass, -Commits clock dividers, -puts dpll at speed + * -executed from SRAM. + * R0 = CM_CLKEN_PLL-bypass value + * R1 = CM_CLKSEL1_PLL-m, n, and divider values + * R2 = CM_CLKSEL_CORE-divider values + * R3 = CM_IDLEST_CKGEN - addr dpll lock wait + * + * Note: If core unlocks/relocks and SDRAM is running fast already it gets + * confused. A reset of the controller gets it back. Taking away its + * L3 when its not in self refresh seems bad for it. Normally, this + * code runs from flash before SDR is init so that should be ok. + ****************************************************************************/ +.global go_to_speed + go_to_speed: + stmfd sp!, {r4 - r6} + + /* move into fast relock bypass */ + ldr r4, pll_ctl_add + str r0, [r4] +wait1: + ldr r5, [r3] /* get status */ + and r5, r5, #0x1 /* isolate core status */ + cmp r5, #0x1 /* still locked? */ + beq wait1 /* if lock, loop */ + + /* set new dpll dividers _after_ in bypass */ + ldr r5, pll_div_add1 + str r1, [r5] /* set m, n, m2 */ + ldr r5, pll_div_add2 + str r2, [r5] /* set l3/l4/.. dividers*/ + ldr r5, pll_div_add3 /* wkup */ + ldr r2, pll_div_val3 /* rsm val */ + str r2, [r5] + ldr r5, pll_div_add4 /* gfx */ + ldr r2, pll_div_val4 + str r2, [r5] + ldr r5, pll_div_add5 /* emu */ + ldr r2, pll_div_val5 + str r2, [r5] + + /* now prepare GPMC (flash) for new dpll speed */ + /* flash needs to be stable when we jump back to it */ + ldr r5, flash_cfg3_addr + ldr r2, flash_cfg3_val + str r2, [r5] + ldr r5, flash_cfg4_addr + ldr r2, flash_cfg4_val + str r2, [r5] + ldr r5, flash_cfg5_addr + ldr r2, flash_cfg5_val + str r2, [r5] + ldr r5, flash_cfg1_addr + ldr r2, [r5] + orr r2, r2, #0x3 /* up gpmc divider */ + str r2, [r5] + + /* lock DPLL3 and wait a bit */ + orr r0, r0, #0x7 /* set up for lock mode */ + str r0, [r4] /* lock */ + nop /* ARM slow at this point working at sys_clk */ + nop + nop + nop +wait2: + ldr r5, [r3] /* get status */ + and r5, r5, #0x1 /* isolate core status */ + cmp r5, #0x1 /* still locked? */ + bne wait2 /* if lock, loop */ + nop + nop + nop + nop + ldmfd sp!, {r4 - r6} + mov pc, lr /* back to caller, locked */ + +_go_to_speed: .word go_to_speed + +/* these constants need to be close for PIC code */ +/* The Nor has to be in the Flash Base CS0 for this condition to happen */ +flash_cfg1_addr: + .word (GPMC_CONFIG_CS0 + GPMC_CONFIG1) +flash_cfg3_addr: + .word (GPMC_CONFIG_CS0 + GPMC_CONFIG3) +flash_cfg3_val: + .word STNOR_GPMC_CONFIG3 +flash_cfg4_addr: + .word (GPMC_CONFIG_CS0 + GPMC_CONFIG4) +flash_cfg4_val: + .word STNOR_GPMC_CONFIG4 +flash_cfg5_val: + .word STNOR_GPMC_CONFIG5 +flash_cfg5_addr: + .word (GPMC_CONFIG_CS0 + GPMC_CONFIG5) +pll_ctl_add: + .word CM_CLKEN_PLL +pll_div_add1: + .word CM_CLKSEL1_PLL +pll_div_add2: + .word CM_CLKSEL_CORE +pll_div_add3: + .word CM_CLKSEL_WKUP +pll_div_val3: + .word (WKUP_RSM << 1) +pll_div_add4: + .word CM_CLKSEL_GFX +pll_div_val4: + .word (GFX_DIV << 0) +pll_div_add5: + .word CM_CLKSEL1_EMU +pll_div_val5: + .word CLSEL1_EMU_VAL + +#endif + +.globl lowlevel_init +lowlevel_init: + ldr sp, SRAM_STACK + str ip, [sp] /* stash old link register */ + mov ip, lr /* save link reg across call */ + bl s_init /* go setup pll, mux, memory */ + ldr ip, [sp] /* restore save ip */ + mov lr, ip /* restore link reg */ + + /* back to arch calling code */ + mov pc, lr + + /* the literal pools origin */ + .ltorg + +REG_CONTROL_STATUS: + .word CONTROL_STATUS +SRAM_STACK: + .word LOW_LEVEL_SRAM_STACK + +/* DPLL(1-4) PARAM TABLES */ + +/* + * Each of the tables has M, N, FREQSEL, M2 values defined for nominal + * OPP (1.2V). The fields are defined according to dpll_param struct (clock.c). + * The values are defined for all possible sysclk and for ES1 and ES2. + */ + +mpu_dpll_param: +/* 12MHz */ +/* ES1 */ +.word MPU_M_12_ES1, MPU_N_12_ES1, MPU_FSEL_12_ES1, MPU_M2_12_ES1 +/* ES2 */ +.word MPU_M_12_ES2, MPU_N_12_ES2, MPU_FSEL_12_ES2, MPU_M2_ES2 +/* 3410 */ +.word MPU_M_12, MPU_N_12, MPU_FSEL_12, MPU_M2_12 + +/* 13MHz */ +/* ES1 */ +.word MPU_M_13_ES1, MPU_N_13_ES1, MPU_FSEL_13_ES1, MPU_M2_13_ES1 +/* ES2 */ +.word MPU_M_13_ES2, MPU_N_13_ES2, MPU_FSEL_13_ES2, MPU_M2_13_ES2 +/* 3410 */ +.word MPU_M_13, MPU_N_13, MPU_FSEL_13, MPU_M2_13 + +/* 19.2MHz */ +/* ES1 */ +.word MPU_M_19P2_ES1, MPU_N_19P2_ES1, MPU_FSEL_19P2_ES1, MPU_M2_19P2_ES1 +/* ES2 */ +.word MPU_M_19P2_ES2, MPU_N_19P2_ES2, MPU_FSEL_19P2_ES2, MPU_M2_19P2_ES2 +/* 3410 */ +.word MPU_M_19P2, MPU_N_19P2, MPU_FSEL_19P2, MPU_M2_19P2 + +/* 26MHz */ +/* ES1 */ +.word MPU_M_26_ES1, MPU_N_26_ES1, MPU_FSEL_26_ES1, MPU_M2_26_ES1 +/* ES2 */ +.word MPU_M_26_ES2, MPU_N_26_ES2, MPU_FSEL_26_ES2, MPU_M2_26_ES2 +/* 3410 */ +.word MPU_M_26, MPU_N_26, MPU_FSEL_26, MPU_M2_26 + +/* 38.4MHz */ +/* ES1 */ +.word MPU_M_38P4_ES1, MPU_N_38P4_ES1, MPU_FSEL_38P4_ES1, MPU_M2_38P4_ES1 +/* ES2 */ +.word MPU_M_38P4_ES2, MPU_N_38P4_ES2, MPU_FSEL_38P4_ES2, MPU_M2_38P4_ES2 +/* 3410 */ +.word MPU_M_38P4, MPU_N_38P4, MPU_FSEL_38P4, MPU_M2_38P4 + + +.globl get_mpu_dpll_param +get_mpu_dpll_param: + adr r0, mpu_dpll_param + mov pc, lr + +iva_dpll_param: +/* 12MHz */ +/* ES1 */ +.word IVA_M_12_ES1, IVA_N_12_ES1, IVA_FSEL_12_ES1, IVA_M2_12_ES1 +/* ES2 */ +.word IVA_M_12_ES2, IVA_N_12_ES2, IVA_FSEL_12_ES2, IVA_M2_12_ES2 +/* 3410 */ +.word IVA_M_12, IVA_N_12, IVA_FSEL_12, IVA_M2_12 + +/* 13MHz */ +/* ES1 */ +.word IVA_M_13_ES1, IVA_N_13_ES1, IVA_FSEL_13_ES1, IVA_M2_13_ES1 +/* ES2 */ +.word IVA_M_13_ES2, IVA_N_13_ES2, IVA_FSEL_13_ES2, IVA_M2_13_ES2 +/* 3410 */ +.word IVA_M_13, IVA_N_13, IVA_FSEL_13, IVA_M2_13 + +/* 19.2MHz */ +/* ES1 */ +.word IVA_M_19P2_ES1, IVA_N_19P2_ES1, IVA_FSEL_19P2_ES1, IVA_M2_19P2_ES1 +/* ES2 */ +.word IVA_M_19P2_ES2, IVA_N_19P2_ES2, IVA_FSEL_19P2_ES2, IVA_M2_19P2_ES2 +/* 3410 */ +.word IVA_M_19P2, IVA_N_19P2, IVA_FSEL_19P2, IVA_M2_19P2 + +/* 26MHz */ +/* ES1 */ +.word IVA_M_26_ES1, IVA_N_26_ES1, IVA_FSEL_26_ES1, IVA_M2_26_ES1 +/* ES2 */ +.word IVA_M_26_ES2, IVA_N_26_ES2, IVA_FSEL_26_ES2, IVA_M2_26_ES2 +/* 3410 */ +.word IVA_M_26, IVA_N_26, IVA_FSEL_26, IVA_M2_26 + +/* 38.4MHz */ +/* ES1 */ +.word IVA_M_38P4_ES1, IVA_N_38P4_ES1, IVA_FSEL_38P4_ES1, IVA_M2_38P4_ES1 +/* ES2 */ +.word IVA_M_38P4_ES2, IVA_N_38P4_ES2, IVA_FSEL_38P4_ES2, IVA_M2_38P4_ES2 +/* 3410 */ +.word IVA_M_38P4, IVA_N_38P4, IVA_FSEL_38P4, IVA_M2_38P4 + + +.globl get_iva_dpll_param +get_iva_dpll_param: + adr r0, iva_dpll_param + mov pc, lr + +/* Core DPLL targets for L3 at 166 & L133 */ +core_dpll_param: +/* 12MHz */ +/* ES1 */ +.word CORE_M_12_ES1, CORE_N_12_ES1, CORE_FSL_12_ES1, CORE_M2_12_ES1 +/* ES2 */ +.word CORE_M_12, CORE_N_12, CORE_FSEL_12, CORE_M2_12 +/* 3410 */ +.word CORE_M_12, CORE_N_12, CORE_FSEL_12, CORE_M2_12 + +/* 13MHz */ +/* ES1 */ +.word CORE_M_13_ES1, CORE_N_13_ES1, CORE_FSL_13_ES1, CORE_M2_13_ES1 +/* ES2 */ +.word CORE_M_13, CORE_N_13, CORE_FSEL_13, CORE_M2_13 +/* 3410 */ +.word CORE_M_13, CORE_N_13, CORE_FSEL_13, CORE_M2_13 + +/* 19.2MHz */ +/* ES1 */ +.word CORE_M_19P2_ES1, CORE_N_19P2_ES1, CORE_FSL_19P2_ES1, CORE_M2_19P2_ES1 +/* ES2 */ +.word CORE_M_19P2, CORE_N_19P2, CORE_FSEL_19P2, CORE_M2_19P2 +/* 3410 */ +.word CORE_M_19P2, CORE_N_19P2, CORE_FSEL_19P2, CORE_M2_19P2 + +/* 26MHz */ +/* ES1 */ +.word CORE_M_26_ES1, CORE_N_26_ES1, CORE_FSL_26_ES1, CORE_M2_26_ES1 +/* ES2 */ +.word CORE_M_26, CORE_N_26, CORE_FSEL_26, CORE_M2_26 +/* 3410 */ +.word CORE_M_26, CORE_N_26, CORE_FSEL_26, CORE_M2_26 + +/* 38.4MHz */ +/* ES1 */ +.word CORE_M_38P4_ES1, CORE_N_38P4_ES1, CORE_FSL_38P4_ES1, CORE_M2_38P4_ES1 +/* ES2 */ +.word CORE_M_38P4, CORE_N_38P4, CORE_FSEL_38P4, CORE_M2_38P4 +/* 3410 */ +.word CORE_M_38P4, CORE_N_38P4, CORE_FSEL_38P4, CORE_M2_38P4 + +.globl get_core_dpll_param +get_core_dpll_param: + adr r0, core_dpll_param + mov pc, lr + +/* PER DPLL values are same for both ES1 and ES2 */ +per_dpll_param: +/* 12MHz */ +.word PER_M_12, PER_N_12, PER_FSEL_12, PER_M2_12 + +/* 13MHz */ +.word PER_M_13, PER_N_13, PER_FSEL_13, PER_M2_13 + +/* 19.2MHz */ +.word PER_M_19P2, PER_N_19P2, PER_FSEL_19P2, PER_M2_19P2 + +/* 26MHz */ +.word PER_M_26, PER_N_26, PER_FSEL_26, PER_M2_26 + +/* 38.4MHz */ +.word PER_M_38P4, PER_N_38P4, PER_FSEL_38P4, PER_M2_38P4 + +.globl get_per_dpll_param +get_per_dpll_param: + adr r0, per_dpll_param + mov pc, lr diff --git a/cpu/arm_cortexa8/omap3/mem.c b/cpu/arm_cortexa8/omap3/mem.c new file mode 100644 index 0000000..3cc22c4 --- /dev/null +++ b/cpu/arm_cortexa8/omap3/mem.c @@ -0,0 +1,284 @@ +/* + * (C) Copyright 2008 + * Texas Instruments, <www.ti.com> + * + * Author : + * Manikandan Pillai <mani.pillai@ti.com> + * + * Initial Code from: + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@ti.com> + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/mem.h> +#include <asm/arch/sys_proto.h> +#include <command.h> + +/* + * Only One NAND allowed on board at a time. + * The GPMC CS Base for the same + */ +unsigned int boot_flash_base; +unsigned int boot_flash_off; +unsigned int boot_flash_sec; +unsigned int boot_flash_type; +volatile unsigned int boot_flash_env_addr; + +#if defined(CONFIG_CMD_NAND) +static u32 gpmc_m_nand[GPMC_MAX_REG] = { + M_NAND_GPMC_CONFIG1, + M_NAND_GPMC_CONFIG2, + M_NAND_GPMC_CONFIG3, + M_NAND_GPMC_CONFIG4, + M_NAND_GPMC_CONFIG5, + M_NAND_GPMC_CONFIG6, 0 +}; + +gpmc_csx_t *nand_cs_base; +gpmc_t *gpmc_cfg_base; + +#if defined(CONFIG_ENV_IS_IN_NAND) +#define GPMC_CS 0 +#else +#define GPMC_CS 1 +#endif + +#endif + +#if defined(CONFIG_CMD_ONENAND) +static u32 gpmc_onenand[GPMC_MAX_REG] = { + ONENAND_GPMC_CONFIG1, + ONENAND_GPMC_CONFIG2, + ONENAND_GPMC_CONFIG3, + ONENAND_GPMC_CONFIG4, + ONENAND_GPMC_CONFIG5, + ONENAND_GPMC_CONFIG6, 0 +}; + +gpmc_csx_t *onenand_cs_base; + +#if defined(CONFIG_ENV_IS_IN_ONENAND) +#define GPMC_CS 0 +#else +#define GPMC_CS 1 +#endif + +#endif + +static sdrc_t *sdrc_base = (sdrc_t *)OMAP34XX_SDRC_BASE; + +/************************************************************************** + * make_cs1_contiguous() - for es2 and above remap cs1 behind cs0 to allow + * command line mem=xyz use all memory with out discontinuous support + * compiled in. Could do it at the ATAG, but there really is two banks... + * Called as part of 2nd phase DDR init. + **************************************************************************/ +void make_cs1_contiguous(void) +{ + u32 size, a_add_low, a_add_high; + + size = get_sdr_cs_size(CS0); + size /= SZ_32M; /* find size to offset CS1 */ + a_add_high = (size & 3) << 8; /* set up low field */ + a_add_low = (size & 0x3C) >> 2; /* set up high field */ + writel((a_add_high | a_add_low), &sdrc_base->cs_cfg); + +} + +/******************************************************** + * mem_ok() - test used to see if timings are correct + * for a part. Helps in guessing which part + * we are currently using. + *******************************************************/ +u32 mem_ok(u32 cs) +{ + u32 val1, val2, addr; + u32 pattern = 0x12345678; + + addr = OMAP34XX_SDRC_CS0 + get_sdr_cs_offset(cs); + + writel(0x0, addr + 0x400); /* clear pos A */ + writel(pattern, addr); /* pattern to pos B */ + writel(0x0, addr + 4); /* remove pattern off the bus */ + val1 = readl(addr + 0x400); /* get pos A value */ + val2 = readl(addr); /* get val2 */ + + if ((val1 != 0) || (val2 != pattern)) /* see if pos A val changed */ + return 0; + else + return 1; +} + +/******************************************************** + * sdrc_init() - init the sdrc chip selects CS0 and CS1 + * - early init routines, called from flash or + * SRAM. + *******************************************************/ +void sdrc_init(void) +{ + /* only init up first bank here */ + do_sdrc_init(CS0, EARLY_INIT); +} + +/************************************************************************* + * do_sdrc_init(): initialize the SDRAM for use. + * -code sets up SDRAM basic SDRC timings for CS0 + * -optimal settings can be placed here, or redone after i2c + * inspection of board info + * + * - code called once in C-Stack only context for CS0 and a possible 2nd + * time depending on memory configuration from stack+global context + **************************************************************************/ + +void do_sdrc_init(u32 cs, u32 early) +{ + sdrc_actim_t *sdrc_actim_base; + + if(cs) + sdrc_actim_base = (sdrc_actim_t *)SDRC_ACTIM_CTRL1_BASE; + else + sdrc_actim_base = (sdrc_actim_t *)SDRC_ACTIM_CTRL0_BASE; + + if (early) { + /* reset sdrc controller */ + writel(SOFTRESET, &sdrc_base->sysconfig); + wait_on_value(RESETDONE, RESETDONE, &sdrc_base->status, + 12000000); + writel(0, &sdrc_base->sysconfig); + + /* setup sdrc to ball mux */ + writel(SDP_SDRC_SHARING, &sdrc_base->sharing); + + /* Disable Power Down of CKE cuz of 1 CKE on combo part */ + writel(SRFRONRESET | PAGEPOLICY_HIGH, &sdrc_base->power); + + writel(ENADLL | DLLPHASE_90, &sdrc_base->dlla_ctrl); + sdelay(0x20000); + } + + writel(RASWIDTH_13BITS | CASWIDTH_10BITS | ADDRMUXLEGACY | + RAMSIZE_128 | BANKALLOCATION | B32NOT16 | B32NOT16 | + DEEPPD | DDR_SDRAM, &sdrc_base->cs[cs].mcfg); + writel(ARCV | ARE_ARCV_1, &sdrc_base->cs[cs].rfr_ctrl); + writel(V_ACTIMA_165, &sdrc_actim_base->ctrla); + writel(V_ACTIMB_165, &sdrc_actim_base->ctrlb); + + writel(CMD_NOP, &sdrc_base ->cs[cs].manual); + writel(CMD_PRECHARGE, &sdrc_base->cs[cs].manual); + writel(CMD_AUTOREFRESH, &sdrc_base->cs[cs].manual); + writel(CMD_AUTOREFRESH, &sdrc_base->cs[cs].manual); + + /* + * CAS latency 3, Write Burst = Read Burst, Serial Mode, + * Burst length = 4 + */ + writel(CASL3 | BURSTLENGTH4, &sdrc_base->cs[cs].mr); + + if (!mem_ok(cs)) + writel(0, &sdrc_base->cs[cs].mcfg); +} + +void enable_gpmc_config(u32 *gpmc_config, gpmc_csx_t *gpmc_cs_base, u32 base, + u32 size) +{ + writel(0, &gpmc_cs_base->config7); + sdelay(1000); + /* Delay for settling */ + writel(gpmc_config[0], &gpmc_cs_base->config1); + writel(gpmc_config[1], &gpmc_cs_base->config2); + writel(gpmc_config[2], &gpmc_cs_base->config3); + writel(gpmc_config[3], &gpmc_cs_base->config4); + writel(gpmc_config[4], &gpmc_cs_base->config5); + writel(gpmc_config[5], &gpmc_cs_base->config6); + /* Enable the config */ + writel((((size & 0xF) << 8) | ((base >> 24) & 0x3F) | + (1 << 6)), &gpmc_cs_base->config7); + sdelay(2000); +} + +/***************************************************** + * gpmc_init(): init gpmc bus + * Init GPMC for x16, MuxMode (SDRAM in x32). + * This code can only be executed from SRAM or SDRAM. + *****************************************************/ +void gpmc_init(void) +{ + /* putting a blanket check on GPMC based on ZeBu for now */ + u32 *gpmc_config = NULL; + gpmc_t *gpmc_base = (gpmc_t *)GPMC_BASE; + gpmc_csx_t *gpmc_cs_base = (gpmc_csx_t *)GPMC_CONFIG_CS0_BASE; + u32 base = 0; + u32 size = 0; + u32 f_off = CONFIG_SYS_MONITOR_LEN; + u32 f_sec = 0; + u32 config = 0; + + /* global settings */ + writel(0, &gpmc_base->irqenable); /* isr's sources masked */ + writel(0, &gpmc_base->timeout_control);/* timeout disable */ + + config = readl(&gpmc_base->config); + config &= (~0xf00); + writel(config, &gpmc_base->config); + + /* + * Disable the GPMC0 config set by ROM code + * It conflicts with our MPDB (both at 0x08000000) + */ + writel(0, &gpmc_cs_base->config7); + sdelay(1000); + +#if defined(CONFIG_CMD_NAND) /* CS 0 */ + gpmc_config = gpmc_m_nand; + gpmc_cfg_base = gpmc_base; + nand_cs_base = (gpmc_csx_t *)(GPMC_CONFIG_CS0_BASE + + (GPMC_CS * GPMC_CONFIG_WIDTH)); + base = PISMO1_NAND_BASE; + size = PISMO1_NAND_SIZE; + enable_gpmc_config(gpmc_config, nand_cs_base, base, size); +#if defined(CONFIG_ENV_IS_IN_NAND) + f_off = SMNAND_ENV_OFFSET; + f_sec = SZ_128K; + /* env setup */ + boot_flash_base = base; + boot_flash_off = f_off; + boot_flash_sec = f_sec; + boot_flash_env_addr = f_off; +#endif +#endif + +#if defined(CONFIG_CMD_ONENAND) + gpmc_config = gpmc_onenand; + onenand_cs_base = (gpmc_csx_t *)(GPMC_CONFIG_CS0_BASE + + (GPMC_CS * GPMC_CONFIG_WIDTH)); + base = PISMO1_ONEN_BASE; + size = PISMO1_ONEN_SIZE; + enable_gpmc_config(gpmc_config, onenand_cs_base, base, size); +#if defined(CONFIG_ENV_IS_IN_ONENAND) + f_off = ONENAND_ENV_OFFSET; + f_sec = SZ_128K; + /* env setup */ + boot_flash_base = base; + boot_flash_off = f_off; + boot_flash_sec = f_sec; + boot_flash_env_addr = f_off; +#endif +#endif +} diff --git a/cpu/arm_cortexa8/omap3/syslib.c b/cpu/arm_cortexa8/omap3/syslib.c new file mode 100644 index 0000000..9ced495 --- /dev/null +++ b/cpu/arm_cortexa8/omap3/syslib.c @@ -0,0 +1,72 @@ +/* + * (C) Copyright 2008 + * Texas Instruments, <www.ti.com> + * + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@ti.com> + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/mem.h> +#include <asm/arch/clocks.h> +#include <asm/arch/sys_proto.h> + +/************************************************************ + * sdelay() - simple spin loop. Will be constant time as + * its generally used in bypass conditions only. This + * is necessary until timers are accessible. + * + * not inline to increase chances its in cache when called + *************************************************************/ +void sdelay(unsigned long loops) +{ + __asm__ volatile ("1:\n" "subs %0, %1, #1\n" + "bne 1b":"=r" (loops):"0"(loops)); +} + +/***************************************************************** + * sr32 - clear & set a value in a bit range for a 32 bit address + *****************************************************************/ +void sr32(void *addr, u32 start_bit, u32 num_bits, u32 value) +{ + u32 tmp, msk = 0; + msk = 1 << num_bits; + --msk; + tmp = readl((u32)addr) & ~(msk << start_bit); + tmp |= value << start_bit; + writel(tmp, (u32)addr); +} + +/********************************************************************* + * wait_on_value() - common routine to allow waiting for changes in + * volatile regs. + *********************************************************************/ +u32 wait_on_value(u32 read_bit_mask, u32 match_value, void *read_addr, + u32 bound) +{ + u32 i = 0, val; + do { + ++i; + val = readl((u32)read_addr) & read_bit_mask; + if (val == match_value) + return 1; + if (i == bound) + return 0; + } while (1); +} |