diff options
Diffstat (limited to 'board/netstar/setup.S')
| -rw-r--r-- | board/netstar/setup.S | 47 |
1 files changed, 22 insertions, 25 deletions
diff --git a/board/netstar/setup.S b/board/netstar/setup.S index f67786d..68747c9 100644 --- a/board/netstar/setup.S +++ b/board/netstar/setup.S @@ -58,10 +58,10 @@ VAL_EMIFF_SDRAM_CONFIG: .word ((0 << 0) | (0 << 1) | (3 << 2) | (0xf << 4) | (0 VAL_EMIFF_SDRAM_CONFIG: .word ((0 << 0) | (0 << 1) | (3 << 2) | (0xd << 4) | (0x246 << 8) | (0 << 24) | (0 << 26) | (0 << 27)) #endif -VAL_EMIFF_SDRAM_CONFIG2: .word 0x00000003 +VAL_EMIFF_SDRAM_CONFIG2: .word 0x00000003 VAL_EMIFF_MRS: .word 0x00000037 -/* +/* * GPIO04 - Green LED (Red LED is connected to LED Pulse Generator) * GPIO07 - LAN91C111 reset */ @@ -106,7 +106,7 @@ MUX_CONFIG_OFFSETS: .align 1 .byte 0x00 @ FUNC_MUX_CTRL_0 .byte 0x04 @ FUNC_MUX_CTRL_1 - .byte 0x08 @ FUNC_MUX_CTRL_2 + .byte 0x08 @ FUNC_MUX_CTRL_2 .byte 0x10 @ FUNC_MUX_CTRL_3 .byte 0x14 @ FUNC_MUX_CTRL_4 .byte 0x18 @ FUNC_MUX_CTRL_5 @@ -145,25 +145,23 @@ lowlevel_init: nop /* Setup clocking mode */ - ldr r0, OMAP5910_MPU_CLKM_BASE @ prepare base of CLOCK unit - ldrh r1, [r0, #0x18] @ get reset status + ldr r0, OMAP5910_MPU_CLKM_BASE @ base of CLOCK unit + ldrh r1, [r0, #0x18] @ ARM_SYST - get reset status bic r1, r1, #(7 << 11) @ clear clock select orr r1, r1, #(2 << 11) @ set synchronous scalable - mov r2, #0 @ set wait counter to 100 clock cycles - -icache_loop: - cmp r2, #0x01 - streqh r1, [r0, #0x18] - add r2, r2, #0x01 - cmp r2, #0x10 - bne icache_loop + mov r2, #0 +loop: + cmp r2, #1 @ this loop will wait for at least 100 cycles + streqh r1, [r0, #0x18] @ before issuing next request from MPU + add r2, r2, #1 @ on the 1st run code is loaded into I-cache + cmp r2, #16 @ and second run will set clocking mode + bne loop nop - /* Setup clock divisors */ - ldr r0, OMAP5910_MPU_CLKM_BASE @ base of CLOCK unit + /* Setup clock dividers */ ldr r1, _OMAP5910_ARM_CKCTL orr r1, r1, #0x2000 @ enable DSP clock - strh r1, [r0, #0x00] @ setup clock divisors + strh r1, [r0] @ setup clock divisors /* Setup DPLL to generate requested freq */ ldr r0, OMAP5910_DPLL1_BASE @ base of DPLL1 register @@ -182,18 +180,17 @@ locking: ldr r0, OMAP5910_MPU_CLKM_BASE @ base of CLOCK unit mov r1, #(1 << 10) @ disable idle mode do not check @ nWAKEUP pin, other remain active - strh r1, [r0, #0x04] + strh r1, [r0, #0x04] ldr r1, _OMAP5910_ARM_EN_CLK strh r1, [r0, #0x08] mov r1, #0x003f @ FLASH.RP not enabled in idle and - @ max delayed ( 32 x CLKIN ) - strh r1, [r0, #0x0c] + strh r1, [r0, #0x0c] @ max delayed ( 32 x CLKIN ) /* Configure 5910 pins functions to match our board. */ ldr r0, MUX_CONFIG_BASE adr r1, MUX_CONFIG_VALUES adr r2, MUX_CONFIG_OFFSETS -next_mux_cfg: +next_mux_cfg: ldrb r3, [r2], #1 ldr r4, [r1], #4 cmp r3, #0xff @@ -240,15 +237,15 @@ next_mux_cfg: strh r1, [r0, #0x34] /* Setup clock divisors */ - ldr r0, OMAP5910_ULPD_PWR_MNG_BASE @ base of ULDPL DPLL1 register + ldr r0, OMAP5910_ULPD_PWR_MNG_BASE @ base of ULDPL DPLL1 register mov r1, #0x0010 @ set PLL_ENABLE - orr r1, r1, #0x2000 @ set IOB to new locking - strh r1, [r0] @ write + orr r1, r1, #0x2000 @ set IOB to new locking + strh r1, [r0] @ write ulocking: ldrh r1, [r0] @ get DPLL value - tst r1, #1 + tst r1, #1 beq ulocking @ while LOCK not set /* EMIF init */ @@ -257,7 +254,7 @@ ulocking: bic r1, r1, #0x0c @ pwr down disabled, flash WP orr r1, r1, #0x01 str r1, [r0, #0x0c] - + ldr r1, VAL_EMIFS_CS0_CONFIG str r1, [r0, #0x10] @ EMIFS_CS0_CONFIG ldr r1, VAL_EMIFS_CS1_CONFIG |