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exynos/snow: Move core/memory clock-related and board ID code

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This patch moves ARM core and DRAM timing functions around to simplify
the dependencies for system_clock_init().

The original code was architected such that the system_clock_init()
function called other functions to obtain core and memory timings.
Due to the way memory timing information must be obtained on Snow,
which entails decoding platform-specific board straps, the bottom-
up approach resulted in having the low-level clock init code
implicitly depend on board and vendor-specific info:

main()
  ->system_clock_init()
    -> get_arm_ratios()
       -> CPU-specific code
    -> clock_get_mem_timings()
       -> board_get_revision()
          -> read GPIOs (3-state logic)
          -> Decode GPIOs in a vendor-specific manner
       -> Choose memory timings from module-specific look-up table
  ...then proceed to init clocks
...come back to main()

The new approach gathers all board and vendor-specific info in a
more appropriate location and passes it into system_clock_init():
main()
  -> get_arm_ratios()
     -> CPU-specific code
  -> get_mem_timings()
     -> board_get_config()
        -> read GPIOs (3-state logic)
        -> Decode GPIOs in a vendor-specific manner
     -> Choose memory timings from module-specific look-up table
  -> system_clock_init()
...back to main()

Change-Id: Ie237ebff76fc2d8a4d2f4577a226ac3909e4d4e8
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2271
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
David Hendricks
2013-02-03 18:09:58 -08:00
committed by Stefan Reinauer
parent 94e230aa93
commit 0d4f97e270
11 changed files with 827 additions and 1256 deletions
Download Patch File Download Diff File Expand all files Collapse all files

113
src/cpu/samsung/exynos5250/clock.c
View File

@@ -26,17 +26,107 @@
#include <stdlib.h>
//#include <fdtdec.h>
#include <arch/io.h>
//#include <asm/arch/clock.h>
//#include <asm/arch/clk.h>
#include <cpu/samsung/exynos5-common/clk.h>
#include <cpu/samsung/exynos5250/clk.h>
#include <cpu/samsung/exynos5250/clock_init.h>
#include <cpu/samsung/exynos5250/cpu.h>
#include <cpu/samsung/exynos5250/periph.h>
#include <cpu/samsung/s5p-common/clk.h>
/* input clock of PLL: SMDK5250 has 24MHz input clock */
#define CONFIG_SYS_CLK_FREQ 24000000
struct arm_clk_ratios arm_clk_ratios[] = {
{
.arm_freq_mhz = 600,
.apll_mdiv = 0xc8,
.apll_pdiv = 0x4,
.apll_sdiv = 0x1,
.arm2_ratio = 0x0,
.apll_ratio = 0x1,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x2,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x1,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 800,
.apll_mdiv = 0x64,
.apll_pdiv = 0x3,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x1,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x3,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x2,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 1000,
.apll_mdiv = 0x7d,
.apll_pdiv = 0x3,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x1,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x4,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x2,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 1200,
.apll_mdiv = 0x96,
.apll_pdiv = 0x3,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x3,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x5,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x3,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 1400,
.apll_mdiv = 0xaf,
.apll_pdiv = 0x3,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x3,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x6,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x3,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 1700,
.apll_mdiv = 0x1a9,
.apll_pdiv = 0x6,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x3,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x6,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x3,
.arm_ratio = 0x0,
}
};
/* src_bit div_bit prediv_bit */
static struct clk_bit_info clk_bit_info[PERIPH_ID_COUNT] = {
@@ -269,6 +359,21 @@ unsigned long get_arm_clk(void)
return armclk;
}
struct arm_clk_ratios *get_arm_clk_ratios(void)
{
struct arm_clk_ratios *arm_ratio;
unsigned long arm_freq = 1700; /* FIXME: use get_arm_clk() */
int i;
for (i = 0, arm_ratio = arm_clk_ratios; i < ARRAY_SIZE(arm_clk_ratios);
i++, arm_ratio++) {
if (arm_ratio->arm_freq_mhz == arm_freq)
return arm_ratio;
}
return NULL;
}
/* exynos5: set the mmc clock */
void set_mmc_clk(int dev_index, unsigned int div)
{

753
src/cpu/samsung/exynos5250/clock_init.c
View File

@@ -29,772 +29,27 @@
#include <console/console.h>
#include <cpu/samsung/exynos5-common/spl.h>
/* FIXME: remove unneeded #includes */
#include <cpu/samsung/exynos5250/clk.h>
#include <cpu/samsung/exynos5250/clock_init.h>
#include <cpu/samsung/exynos5250/cpu.h>
#include <cpu/samsung/exynos5250/dmc.h>
#include <cpu/samsung/exynos5250/s5p-dp.h>
#include <cpu/samsung/s5p-common/clk.h>
#include "clock_init.h"
#include "setup.h"
struct arm_clk_ratios arm_clk_ratios[] = {
{
.arm_freq_mhz = 600,
.apll_mdiv = 0xc8,
.apll_pdiv = 0x4,
.apll_sdiv = 0x1,
.arm2_ratio = 0x0,
.apll_ratio = 0x1,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x2,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x1,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 800,
.apll_mdiv = 0x64,
.apll_pdiv = 0x3,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x1,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x3,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x2,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 1000,
.apll_mdiv = 0x7d,
.apll_pdiv = 0x3,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x1,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x4,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x2,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 1200,
.apll_mdiv = 0x96,
.apll_pdiv = 0x3,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x3,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x5,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x3,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 1400,
.apll_mdiv = 0xaf,
.apll_pdiv = 0x3,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x3,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x6,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x3,
.arm_ratio = 0x0,
}, {
.arm_freq_mhz = 1700,
.apll_mdiv = 0x1a9,
.apll_pdiv = 0x6,
.apll_sdiv = 0x0,
.arm2_ratio = 0x0,
.apll_ratio = 0x3,
.pclk_dbg_ratio = 0x1,
.atb_ratio = 0x6,
.periph_ratio = 0x7,
.acp_ratio = 0x7,
.cpud_ratio = 0x3,
.arm_ratio = 0x0,
}
};
struct mem_timings mem_timings[] = {
{
.mem_manuf = MEM_MANUF_ELPIDA,
.mem_type = DDR_MODE_DDR3,
.frequency_mhz = 800,
.mpll_mdiv = 0x64,
.mpll_pdiv = 0x3,
.mpll_sdiv = 0x0,
.cpll_mdiv = 0xde,
.cpll_pdiv = 0x4,
.cpll_sdiv = 0x2,
.gpll_mdiv = 0x215,
.gpll_pdiv = 0xc,
.gpll_sdiv = 0x1,
.epll_mdiv = 0x60,
.epll_pdiv = 0x3,
.epll_sdiv = 0x3,
.vpll_mdiv = 0x96,
.vpll_pdiv = 0x3,
.vpll_sdiv = 0x2,
.bpll_mdiv = 0x64,
.bpll_pdiv = 0x3,
.bpll_sdiv = 0x0,
.use_bpll = 0,
.pclk_cdrex_ratio = 0x5,
.direct_cmd_msr = {
0x00020018, 0x00030000, 0x00010042, 0x00000d70
},
.timing_ref = 0x000000bb,
.timing_row = 0x8c36660f,
.timing_data = 0x3630580b,
.timing_power = 0x41000a44,
.phy0_dqs = 0x08080808,
.phy1_dqs = 0x08080808,
.phy0_dq = 0x08080808,
.phy1_dq = 0x08080808,
.phy0_tFS = 0x4,
.phy1_tFS = 0x4,
.phy0_pulld_dqs = 0xf,
.phy1_pulld_dqs = 0xf,
.lpddr3_ctrl_phy_reset = 0x1,
.ctrl_start_point = 0x10,
.ctrl_inc = 0x10,
.ctrl_start = 0x1,
.ctrl_dll_on = 0x1,
.ctrl_ref = 0x8,
.ctrl_force = 0x1a,
.ctrl_rdlat = 0x0b,
.ctrl_bstlen = 0x08,
.fp_resync = 0x8,
.iv_size = 0x7,
.dfi_init_start = 1,
.aref_en = 1,
.rd_fetch = 0x3,
.zq_mode_dds = 0x7,
.zq_mode_term = 0x1,
.zq_mode_noterm = 0,
/*
* Dynamic Clock: Always Running
* Memory Burst length: 8
* Number of chips: 1
* Memory Bus width: 32 bit
* Memory Type: DDR3
* Additional Latancy for PLL: 0 Cycle
*/
.memcontrol = DMC_MEMCONTROL_CLK_STOP_DISABLE |
DMC_MEMCONTROL_DPWRDN_DISABLE |
DMC_MEMCONTROL_DPWRDN_ACTIVE_PRECHARGE |
DMC_MEMCONTROL_TP_DISABLE |
DMC_MEMCONTROL_DSREF_ENABLE |
DMC_MEMCONTROL_ADD_LAT_PALL_CYCLE(0) |
DMC_MEMCONTROL_MEM_TYPE_DDR3 |
DMC_MEMCONTROL_MEM_WIDTH_32BIT |
DMC_MEMCONTROL_NUM_CHIP_1 |
DMC_MEMCONTROL_BL_8 |
DMC_MEMCONTROL_PZQ_DISABLE |
DMC_MEMCONTROL_MRR_BYTE_7_0,
.memconfig = DMC_MEMCONFIGx_CHIP_MAP_INTERLEAVED |
DMC_MEMCONFIGx_CHIP_COL_10 |
DMC_MEMCONFIGx_CHIP_ROW_15 |
DMC_MEMCONFIGx_CHIP_BANK_8,
.membaseconfig0 = DMC_MEMBASECONFIG_VAL(0x40),
.membaseconfig1 = DMC_MEMBASECONFIG_VAL(0x80),
.prechconfig_tp_cnt = 0xff,
.dpwrdn_cyc = 0xff,
.dsref_cyc = 0xffff,
.concontrol = DMC_CONCONTROL_DFI_INIT_START_DISABLE |
DMC_CONCONTROL_TIMEOUT_LEVEL0 |
DMC_CONCONTROL_RD_FETCH_DISABLE |
DMC_CONCONTROL_EMPTY_DISABLE |
DMC_CONCONTROL_AREF_EN_DISABLE |
DMC_CONCONTROL_IO_PD_CON_DISABLE,
.dmc_channels = 2,
.chips_per_channel = 2,
.chips_to_configure = 1,
.send_zq_init = 1,
.impedance = IMP_OUTPUT_DRV_30_OHM,
.gate_leveling_enable = 0,
}, {
.mem_manuf = MEM_MANUF_SAMSUNG,
.mem_type = DDR_MODE_DDR3,
.frequency_mhz = 800,
.mpll_mdiv = 0x64,
.mpll_pdiv = 0x3,
.mpll_sdiv = 0x0,
.cpll_mdiv = 0xde,
.cpll_pdiv = 0x4,
.cpll_sdiv = 0x2,
.gpll_mdiv = 0x215,
.gpll_pdiv = 0xc,
.gpll_sdiv = 0x1,
.epll_mdiv = 0x60,
.epll_pdiv = 0x3,
.epll_sdiv = 0x3,
.vpll_mdiv = 0x96,
.vpll_pdiv = 0x3,
.vpll_sdiv = 0x2,
.bpll_mdiv = 0x64,
.bpll_pdiv = 0x3,
.bpll_sdiv = 0x0,
.use_bpll = 0,
.pclk_cdrex_ratio = 0x5,
.direct_cmd_msr = {
0x00020018, 0x00030000, 0x00010000, 0x00000d70
},
.timing_ref = 0x000000bb,
.timing_row = 0x8c36660f,
.timing_data = 0x3630580b,
.timing_power = 0x41000a44,
.phy0_dqs = 0x08080808,
.phy1_dqs = 0x08080808,
.phy0_dq = 0x08080808,
.phy1_dq = 0x08080808,
.phy0_tFS = 0x8,
.phy1_tFS = 0x8,
.phy0_pulld_dqs = 0xf,
.phy1_pulld_dqs = 0xf,
.lpddr3_ctrl_phy_reset = 0x1,
.ctrl_start_point = 0x10,
.ctrl_inc = 0x10,
.ctrl_start = 0x1,
.ctrl_dll_on = 0x1,
.ctrl_ref = 0x8,
.ctrl_force = 0x1a,
.ctrl_rdlat = 0x0b,
.ctrl_bstlen = 0x08,
.fp_resync = 0x8,
.iv_size = 0x7,
.dfi_init_start = 1,
.aref_en = 1,
.rd_fetch = 0x3,
.zq_mode_dds = 0x5,
.zq_mode_term = 0x1,
.zq_mode_noterm = 1,
/*
* Dynamic Clock: Always Running
* Memory Burst length: 8
* Number of chips: 1
* Memory Bus width: 32 bit
* Memory Type: DDR3
* Additional Latancy for PLL: 0 Cycle
*/
.memcontrol = DMC_MEMCONTROL_CLK_STOP_DISABLE |
DMC_MEMCONTROL_DPWRDN_DISABLE |
DMC_MEMCONTROL_DPWRDN_ACTIVE_PRECHARGE |
DMC_MEMCONTROL_TP_DISABLE |
DMC_MEMCONTROL_DSREF_ENABLE |
DMC_MEMCONTROL_ADD_LAT_PALL_CYCLE(0) |
DMC_MEMCONTROL_MEM_TYPE_DDR3 |
DMC_MEMCONTROL_MEM_WIDTH_32BIT |
DMC_MEMCONTROL_NUM_CHIP_1 |
DMC_MEMCONTROL_BL_8 |
DMC_MEMCONTROL_PZQ_DISABLE |
DMC_MEMCONTROL_MRR_BYTE_7_0,
.memconfig = DMC_MEMCONFIGx_CHIP_MAP_INTERLEAVED |
DMC_MEMCONFIGx_CHIP_COL_10 |
DMC_MEMCONFIGx_CHIP_ROW_15 |
DMC_MEMCONFIGx_CHIP_BANK_8,
.membaseconfig0 = DMC_MEMBASECONFIG_VAL(0x40),
.membaseconfig1 = DMC_MEMBASECONFIG_VAL(0x80),
.prechconfig_tp_cnt = 0xff,
.dpwrdn_cyc = 0xff,
.dsref_cyc = 0xffff,
.concontrol = DMC_CONCONTROL_DFI_INIT_START_DISABLE |
DMC_CONCONTROL_TIMEOUT_LEVEL0 |
DMC_CONCONTROL_RD_FETCH_DISABLE |
DMC_CONCONTROL_EMPTY_DISABLE |
DMC_CONCONTROL_AREF_EN_DISABLE |
DMC_CONCONTROL_IO_PD_CON_DISABLE,
.dmc_channels = 2,
.chips_per_channel = 2,
.chips_to_configure = 1,
.send_zq_init = 1,
.impedance = IMP_OUTPUT_DRV_40_OHM,
.gate_leveling_enable = 1,
},
{
.mem_manuf = MEM_MANUF_ELPIDA,
.mem_type = DDR_MODE_DDR3,
.frequency_mhz = 780,
.mpll_mdiv = 0x64,
.mpll_pdiv = 0x3,
.mpll_sdiv = 0x0,
.cpll_mdiv = 0xde,
.cpll_pdiv = 0x4,
.cpll_sdiv = 0x2,
.gpll_mdiv = 0x215,
.gpll_pdiv = 0xc,
.gpll_sdiv = 0x1,
.epll_mdiv = 0x60,
.epll_pdiv = 0x3,
.epll_sdiv = 0x3,
.vpll_mdiv = 0x96,
.vpll_pdiv = 0x3,
.vpll_sdiv = 0x2,
.bpll_mdiv = 0x82,
.bpll_pdiv = 0x4,
.bpll_sdiv = 0x0,
.use_bpll = 1,
.pclk_cdrex_ratio = 0x5,
.direct_cmd_msr = {
0x00020018, 0x00030000, 0x00010042, 0x00000d70
},
.timing_ref = 0x000000bb,
.timing_row = 0x8c36660f,
.timing_data = 0x3630580b,
.timing_power = 0x41000a44,
.phy0_dqs = 0x08080808,
.phy1_dqs = 0x08080808,
.phy0_dq = 0x08080808,
.phy1_dq = 0x08080808,
.phy0_tFS = 0x4,
.phy1_tFS = 0x4,
.phy0_pulld_dqs = 0xf,
.phy1_pulld_dqs = 0xf,
.lpddr3_ctrl_phy_reset = 0x1,
.ctrl_start_point = 0x10,
.ctrl_inc = 0x10,
.ctrl_start = 0x1,
.ctrl_dll_on = 0x1,
.ctrl_ref = 0x8,
.ctrl_force = 0x1a,
.ctrl_rdlat = 0x0b,
.ctrl_bstlen = 0x08,
.fp_resync = 0x8,
.iv_size = 0x7,
.dfi_init_start = 1,
.aref_en = 1,
.rd_fetch = 0x3,
.zq_mode_dds = 0x7,
.zq_mode_term = 0x1,
.zq_mode_noterm = 0,
/*
* Dynamic Clock: Always Running
* Memory Burst length: 8
* Number of chips: 1
* Memory Bus width: 32 bit
* Memory Type: DDR3
* Additional Latancy for PLL: 0 Cycle
*/
.memcontrol = DMC_MEMCONTROL_CLK_STOP_DISABLE |
DMC_MEMCONTROL_DPWRDN_DISABLE |
DMC_MEMCONTROL_DPWRDN_ACTIVE_PRECHARGE |
DMC_MEMCONTROL_TP_DISABLE |
DMC_MEMCONTROL_DSREF_ENABLE |
DMC_MEMCONTROL_ADD_LAT_PALL_CYCLE(0) |
DMC_MEMCONTROL_MEM_TYPE_DDR3 |
DMC_MEMCONTROL_MEM_WIDTH_32BIT |
DMC_MEMCONTROL_NUM_CHIP_1 |
DMC_MEMCONTROL_BL_8 |
DMC_MEMCONTROL_PZQ_DISABLE |
DMC_MEMCONTROL_MRR_BYTE_7_0,
.memconfig = DMC_MEMCONFIGx_CHIP_MAP_INTERLEAVED |
DMC_MEMCONFIGx_CHIP_COL_10 |
DMC_MEMCONFIGx_CHIP_ROW_15 |
DMC_MEMCONFIGx_CHIP_BANK_8,
.membaseconfig0 = DMC_MEMBASECONFIG_VAL(0x40),
.membaseconfig1 = DMC_MEMBASECONFIG_VAL(0x80),
.prechconfig_tp_cnt = 0xff,
.dpwrdn_cyc = 0xff,
.dsref_cyc = 0xffff,
.concontrol = DMC_CONCONTROL_DFI_INIT_START_DISABLE |
DMC_CONCONTROL_TIMEOUT_LEVEL0 |
DMC_CONCONTROL_RD_FETCH_DISABLE |
DMC_CONCONTROL_EMPTY_DISABLE |
DMC_CONCONTROL_AREF_EN_DISABLE |
DMC_CONCONTROL_IO_PD_CON_DISABLE,
.dmc_channels = 2,
.chips_per_channel = 2,
.chips_to_configure = 1,
.send_zq_init = 1,
.impedance = IMP_OUTPUT_DRV_30_OHM,
.gate_leveling_enable = 0,
}, {
.mem_manuf = MEM_MANUF_SAMSUNG,
.mem_type = DDR_MODE_DDR3,
.frequency_mhz = 780,
.mpll_mdiv = 0x64,
.mpll_pdiv = 0x3,
.mpll_sdiv = 0x0,
.cpll_mdiv = 0xde,
.cpll_pdiv = 0x4,
.cpll_sdiv = 0x2,
.gpll_mdiv = 0x215,
.gpll_pdiv = 0xc,
.gpll_sdiv = 0x1,
.epll_mdiv = 0x60,
.epll_pdiv = 0x3,
.epll_sdiv = 0x3,
.vpll_mdiv = 0x96,
.vpll_pdiv = 0x3,
.vpll_sdiv = 0x2,
.bpll_mdiv = 0x82,
.bpll_pdiv = 0x4,
.bpll_sdiv = 0x0,
.use_bpll = 1,
.pclk_cdrex_ratio = 0x5,
.direct_cmd_msr = {
0x00020018, 0x00030000, 0x00010000, 0x00000d70
},
.timing_ref = 0x000000bb,
.timing_row = 0x8c36660f,
.timing_data = 0x3630580b,
.timing_power = 0x41000a44,
.phy0_dqs = 0x08080808,
.phy1_dqs = 0x08080808,
.phy0_dq = 0x08080808,
.phy1_dq = 0x08080808,
.phy0_tFS = 0x8,
.phy1_tFS = 0x8,
.phy0_pulld_dqs = 0xf,
.phy1_pulld_dqs = 0xf,
.lpddr3_ctrl_phy_reset = 0x1,
.ctrl_start_point = 0x10,
.ctrl_inc = 0x10,
.ctrl_start = 0x1,
.ctrl_dll_on = 0x1,
.ctrl_ref = 0x8,
.ctrl_force = 0x1a,
.ctrl_rdlat = 0x0b,
.ctrl_bstlen = 0x08,
.fp_resync = 0x8,
.iv_size = 0x7,
.dfi_init_start = 1,
.aref_en = 1,
.rd_fetch = 0x3,
.zq_mode_dds = 0x5,
.zq_mode_term = 0x1,
.zq_mode_noterm = 1,
/*
* Dynamic Clock: Always Running
* Memory Burst length: 8
* Number of chips: 1
* Memory Bus width: 32 bit
* Memory Type: DDR3
* Additional Latancy for PLL: 0 Cycle
*/
.memcontrol = DMC_MEMCONTROL_CLK_STOP_DISABLE |
DMC_MEMCONTROL_DPWRDN_DISABLE |
DMC_MEMCONTROL_DPWRDN_ACTIVE_PRECHARGE |
DMC_MEMCONTROL_TP_DISABLE |
DMC_MEMCONTROL_DSREF_ENABLE |
DMC_MEMCONTROL_ADD_LAT_PALL_CYCLE(0) |
DMC_MEMCONTROL_MEM_TYPE_DDR3 |
DMC_MEMCONTROL_MEM_WIDTH_32BIT |
DMC_MEMCONTROL_NUM_CHIP_1 |
DMC_MEMCONTROL_BL_8 |
DMC_MEMCONTROL_PZQ_DISABLE |
DMC_MEMCONTROL_MRR_BYTE_7_0,
.memconfig = DMC_MEMCONFIGx_CHIP_MAP_INTERLEAVED |
DMC_MEMCONFIGx_CHIP_COL_10 |
DMC_MEMCONFIGx_CHIP_ROW_15 |
DMC_MEMCONFIGx_CHIP_BANK_8,
.membaseconfig0 = DMC_MEMBASECONFIG_VAL(0x40),
.membaseconfig1 = DMC_MEMBASECONFIG_VAL(0x80),
.prechconfig_tp_cnt = 0xff,
.dpwrdn_cyc = 0xff,
.dsref_cyc = 0xffff,
.concontrol = DMC_CONCONTROL_DFI_INIT_START_DISABLE |
DMC_CONCONTROL_TIMEOUT_LEVEL0 |
DMC_CONCONTROL_RD_FETCH_DISABLE |
DMC_CONCONTROL_EMPTY_DISABLE |
DMC_CONCONTROL_AREF_EN_DISABLE |
DMC_CONCONTROL_IO_PD_CON_DISABLE,
.dmc_channels = 2,
.chips_per_channel = 2,
.chips_to_configure = 1,
.send_zq_init = 1,
.impedance = IMP_OUTPUT_DRV_40_OHM,
.gate_leveling_enable = 1,
}
};
/**
* Detect what memory is present based on board strappings
*
* Boards have various resistor stuff options that are supposed to match
* which SDRAM is present (and which revision of the board this is). This
* uses the resistor stuff options to figure out what memory manufacturer
* to use for matching in the memory tables.
*
* @return A MEM_MANUF_XXX constant, or -1 if an error occurred.
*/
/*
* FIXME(dhendrix): This unwinds into a mess of board-specific code. The
* board's romstage.c file should detect the memory type and pass in
* appropriate parameters to whatever calls this.
*/
#define BOARD_REV_ELPIDA_MEMORY 3
#define BOARD_REV_SAMSUNG_MEMORY 4
static inline int board_get_revision(void)
{
/* FIXME: yuck! */
return BOARD_REV_ELPIDA_MEMORY;
}
static int autodetect_memory(void)
{
int board_rev = board_get_revision();
if (board_rev == -1)
return -1;
switch (board_rev) {
case BOARD_REV_SAMSUNG_MEMORY:
return MEM_MANUF_SAMSUNG;
case BOARD_REV_ELPIDA_MEMORY:
return MEM_MANUF_ELPIDA;
}
return -1;
}
#ifdef CONFIG_SPL_BUILD
#define SIGNATURE 0xdeadbeef
/* Parameters of early board initialization in SPL */
static struct spl_machine_param machine_param = {
.signature = SIGNATURE,
.version = 1,
.params = "vmubfasirMw",
.size = sizeof(machine_param),
.mem_iv_size = 0x1f,
.mem_type = DDR_MODE_DDR3,
/*
* Set uboot_size to 0x100000 bytes.
*
* This is an overly conservative value chosen to accommodate all
* possible U-Boot image. You are advised to set this value to a
* smaller realistic size via scripts that modifies the .machine_param
* section of output U-Boot image.
*/
.uboot_size = 0x100000,
.boot_source = BOOT_MODE_OM,
.frequency_mhz = 800,
.arm_freq_mhz = 1700,
.serial_base = 0x12c30000,
.i2c_base = 0x12c60000,
// .board_rev_gpios = GPIO_D00 | (GPIO_D01 << 16),
.mem_manuf = MEM_MANUF_SAMSUNG,
// .bad_wake_gpio = GPIO_Y10,
};
/**
* Get the required memory type and speed (SPL version).
*
* In SPL we have no device tree, so we use the machine parameters
*/
int clock_get_mem_selection(enum ddr_mode *mem_type,
unsigned *frequency_mhz, unsigned *arm_freq,
enum mem_manuf *mem_manuf)
{
struct spl_machine_param *params;
params = &machine_param;
*mem_type = params->mem_type;
*frequency_mhz = params->frequency_mhz;
*arm_freq = params->arm_freq_mhz;
if (params->mem_manuf == MEM_MANUF_AUTODETECT) {
*mem_manuf = autodetect_memory();
if (*mem_manuf == -1)
return -1;
} else {
*mem_manuf = params->mem_manuf;
}
return 0;
}
#else
static const char *mem_types[DDR_MODE_COUNT] = {
"DDR2", "DDR3", "LPDDR2", "LPDDR3"
};
static const char *mem_manufs[MEM_MANUF_COUNT] = {
"autodetect", "Elpida", "Samsung"
};
int clock_get_mem_selection(enum ddr_mode *mem_type,
unsigned *frequency_mhz, unsigned *arm_freq,
enum mem_manuf *mem_manuf)
{
const char *typestr;
int node, i;
node = fdtdec_next_compatible(gd->fdt_blob, 0,
COMPAT_SAMSUNG_EXYNOS_DMC);
if (node < 0)
die("No memory information available in device tree");
typestr = fdt_getprop(gd->fdt_blob, node, "mem-type", NULL);
for (i = 0; i < DDR_MODE_COUNT; i++) {
if (!stricmp(typestr, mem_types[i]))
break;
}
if (i == DDR_MODE_COUNT)
die("Invalid memory type in device tree");
*mem_type = i;
typestr = fdt_getprop(gd->fdt_blob, node, "mem-manuf", NULL);
for (i = 0; i < MEM_MANUF_COUNT; i++) {
if (!stricmp(typestr, mem_manufs[i]))
break;
}
if (i == MEM_MANUF_COUNT)
die("Invalid memory manufacturer in device tree");
if (i == MEM_MANUF_AUTODETECT) {
*mem_manuf = autodetect_memory();
if (*mem_manuf == -1)
return -1;
} else {
*mem_manuf = i;
}
*frequency_mhz = fdtdec_get_int(gd->fdt_blob, node, "clock-frequency",
0);
if (!*frequency_mhz)
die("Invalid memory frequency in device tree");
*arm_freq = fdtdec_get_int(gd->fdt_blob, node, "arm-frequency", 0);
/* TODO: Remove all these panics/dies, and just return an error code */
if (!*arm_freq)
die("Invalid ARM frequency in device tree");
return 0;
}
const char *clock_get_mem_type_name(enum ddr_mode mem_type)
{
if (mem_type >= 0 && mem_type < DDR_MODE_COUNT)
return mem_types[mem_type];
return "<unknown>";
}
const char *clock_get_mem_manuf_name(enum mem_manuf mem_manuf)
{
if (mem_manuf >= 0 && mem_manuf < MEM_MANUF_COUNT)
return mem_manufs[mem_manuf];
return "<unknown>";
}
#endif
/* Get the ratios for setting ARM clock */
struct arm_clk_ratios *get_arm_ratios(void); /* FIXME: silence compiler... */
struct arm_clk_ratios *get_arm_ratios(void)
{
struct arm_clk_ratios *arm_ratio;
enum ddr_mode mem_type;
enum mem_manuf mem_manuf;
unsigned frequency_mhz, arm_freq;
int i;
/* TODO(sjg@chromium.org): Return NULL and have caller deal with it */
if (clock_get_mem_selection(&mem_type, &frequency_mhz,
&arm_freq, &mem_manuf))
;
for (i = 0, arm_ratio = arm_clk_ratios; i < ARRAY_SIZE(arm_clk_ratios);
i++, arm_ratio++) {
if (arm_ratio->arm_freq_mhz == arm_freq)
return arm_ratio;
}
// die("get_arm_ratios: Failed to find ratio\n");
return NULL;
}
struct mem_timings *clock_get_mem_timings(void)
{
/* FIXME: hard-coded for now */
return &mem_timings[0];
#if 0
struct mem_timings *mem;
enum ddr_mode mem_type;
enum mem_manuf mem_manuf;
unsigned frequency_mhz, arm_freq;
int i;
if (!clock_get_mem_selection(&mem_type, &frequency_mhz,
&arm_freq, &mem_manuf)) {
for (i = 0, mem = mem_timings; i < ARRAY_SIZE(mem_timings);
i++, mem++) {
if (mem->mem_type == mem_type &&
mem->frequency_mhz == frequency_mhz &&
mem->mem_manuf == mem_manuf)
return mem;
}
}
return NULL;
#endif
}
void system_clock_init(void)
void system_clock_init(struct mem_timings *mem,
struct arm_clk_ratios *arm_clk_ratio)
{
struct exynos5_clock *clk = (struct exynos5_clock *)EXYNOS5_CLOCK_BASE;
struct exynos5_mct_regs *mct_regs =
(struct exynos5_mct_regs *)EXYNOS5_MULTI_CORE_TIMER_BASE;
struct mem_timings *mem;
struct arm_clk_ratios *arm_clk_ratio;
u32 val, tmp;
/* Turn on the MCT as early as possible. */
mct_regs->g_tcon |= (1 << 8);
mem = clock_get_mem_timings();
arm_clk_ratio = get_arm_ratios();
clrbits_le32(&clk->src_cpu, MUX_APLL_SEL_MASK);
do {
val = readl(&clk->mux_stat_cpu);

103
src/cpu/samsung/exynos5250/clock_init.h
View File

@@ -25,10 +25,6 @@
#ifndef __EXYNOS_CLOCK_INIT_H
#define __EXYNOS_CLOCK_INIT_H
enum {
MEM_TIMINGS_MSR_COUNT = 4,
};
/* These are the ratio's for configuring ARM clock */
struct arm_clk_ratios {
unsigned int arm_freq_mhz; /* Frequency of ARM core in MHz */
@@ -47,104 +43,17 @@ struct arm_clk_ratios {
unsigned int arm_ratio;
};
/* These are the memory timings for a particular memory type and speed */
struct mem_timings {
enum mem_manuf mem_manuf; /* Memory manufacturer */
enum ddr_mode mem_type; /* Memory type */
unsigned int frequency_mhz; /* Frequency of memory in MHz */
/* Here follow the timing parameters for the selected memory */
uint8_t apll_mdiv;
uint8_t apll_pdiv;
uint8_t apll_sdiv;
uint8_t mpll_mdiv;
uint8_t mpll_pdiv;
uint8_t mpll_sdiv;
uint8_t cpll_mdiv;
uint8_t cpll_pdiv;
uint8_t cpll_sdiv;
uint8_t gpll_pdiv;
uint16_t gpll_mdiv;
uint8_t gpll_sdiv;
uint8_t epll_mdiv;
uint8_t epll_pdiv;
uint8_t epll_sdiv;
uint8_t vpll_mdiv;
uint8_t vpll_pdiv;
uint8_t vpll_sdiv;
uint8_t bpll_mdiv;
uint8_t bpll_pdiv;
uint8_t bpll_sdiv;
uint8_t use_bpll; /* 1 to use BPLL for cdrex, 0 to use MPLL */
uint8_t pclk_cdrex_ratio;
unsigned int direct_cmd_msr[MEM_TIMINGS_MSR_COUNT];
unsigned int timing_ref;
unsigned int timing_row;
unsigned int timing_data;
unsigned int timing_power;
/* DQS, DQ, DEBUG offsets */
unsigned int phy0_dqs;
unsigned int phy1_dqs;
unsigned int phy0_dq;
unsigned int phy1_dq;
uint8_t phy0_tFS;
uint8_t phy1_tFS;
uint8_t phy0_pulld_dqs;
uint8_t phy1_pulld_dqs;
uint8_t lpddr3_ctrl_phy_reset;
uint8_t ctrl_start_point;
uint8_t ctrl_inc;
uint8_t ctrl_start;
uint8_t ctrl_dll_on;
uint8_t ctrl_ref;
uint8_t ctrl_force;
uint8_t ctrl_rdlat;
uint8_t ctrl_bstlen;
uint8_t fp_resync;
uint8_t iv_size;
uint8_t dfi_init_start;
uint8_t aref_en;
uint8_t rd_fetch;
uint8_t zq_mode_dds;
uint8_t zq_mode_term;
uint8_t zq_mode_noterm; /* 1 to allow termination disable */
unsigned int memcontrol;
unsigned int memconfig;
unsigned int membaseconfig0;
unsigned int membaseconfig1;
unsigned int prechconfig_tp_cnt;
unsigned int dpwrdn_cyc;
unsigned int dsref_cyc;
unsigned int concontrol;
/* Channel and Chip Selection */
uint8_t dmc_channels; /* number of memory channels */
uint8_t chips_per_channel; /* number of chips per channel */
uint8_t chips_to_configure; /* number of chips to configure */
uint8_t send_zq_init; /* 1 to send this command */
unsigned int impedance; /* drive strength impedeance */
uint8_t gate_leveling_enable; /* check gate leveling is enabled */
};
/**
* Get the correct memory timings for our selected memory type and speed.
* Get the clock ratios for CPU configuration
*
* This function can be called from SPL or the main U-Boot.
*
* @return pointer to the memory timings that we should use
* @return pointer to the clock ratios that we should use
*/
struct mem_timings *clock_get_mem_timings(void);
struct arm_clk_ratios *get_arm_clk_ratios(void);
/*
* Initialize clock for the device
*/
void system_clock_init(void);
struct mem_timings;
void system_clock_init(struct mem_timings *mem,
struct arm_clk_ratios *arm_clk_ratio);
#endif

98
src/cpu/samsung/exynos5250/dmc.h
View File

@@ -175,6 +175,10 @@ enum mem_manuf {
MEM_MANUF_COUNT = 2, // fancy that.
};
enum {
MEM_TIMINGS_MSR_COUNT = 4,
};
#define DMC_INTERLEAVE_SIZE 0x1f
/* CONCONTROL register fields */
@@ -224,5 +228,99 @@ enum mem_manuf {
#define PHY_CON42_CTRL_RDLAT_SHIFT 0
#define PHY_CON42_CTRL_RDLAT_MASK (0x1f << PHY_CON42_CTRL_RDLAT_SHIFT)
/* These are the memory timings for a particular memory type and speed */
struct mem_timings {
enum mem_manuf mem_manuf; /* Memory manufacturer */
enum ddr_mode mem_type; /* Memory type */
unsigned int frequency_mhz; /* Frequency of memory in MHz */
/* Here follow the timing parameters for the selected memory */
uint8_t apll_mdiv;
uint8_t apll_pdiv;
uint8_t apll_sdiv;
uint8_t mpll_mdiv;
uint8_t mpll_pdiv;
uint8_t mpll_sdiv;
uint8_t cpll_mdiv;
uint8_t cpll_pdiv;
uint8_t cpll_sdiv;
uint8_t gpll_pdiv;
uint16_t gpll_mdiv;
uint8_t gpll_sdiv;
uint8_t epll_mdiv;
uint8_t epll_pdiv;
uint8_t epll_sdiv;
uint8_t vpll_mdiv;
uint8_t vpll_pdiv;
uint8_t vpll_sdiv;
uint8_t bpll_mdiv;
uint8_t bpll_pdiv;
uint8_t bpll_sdiv;
uint8_t use_bpll; /* 1 to use BPLL for cdrex, 0 to use MPLL */
uint8_t pclk_cdrex_ratio;
unsigned int direct_cmd_msr[MEM_TIMINGS_MSR_COUNT];
unsigned int timing_ref;
unsigned int timing_row;
unsigned int timing_data;
unsigned int timing_power;
/* DQS, DQ, DEBUG offsets */
unsigned int phy0_dqs;
unsigned int phy1_dqs;
unsigned int phy0_dq;
unsigned int phy1_dq;
uint8_t phy0_tFS;
uint8_t phy1_tFS;
uint8_t phy0_pulld_dqs;
uint8_t phy1_pulld_dqs;
uint8_t lpddr3_ctrl_phy_reset;
uint8_t ctrl_start_point;
uint8_t ctrl_inc;
uint8_t ctrl_start;
uint8_t ctrl_dll_on;
uint8_t ctrl_ref;
uint8_t ctrl_force;
uint8_t ctrl_rdlat;
uint8_t ctrl_bstlen;
uint8_t fp_resync;
uint8_t iv_size;
uint8_t dfi_init_start;
uint8_t aref_en;
uint8_t rd_fetch;
uint8_t zq_mode_dds;
uint8_t zq_mode_term;
uint8_t zq_mode_noterm; /* 1 to allow termination disable */
unsigned int memcontrol;
unsigned int memconfig;
unsigned int membaseconfig0;
unsigned int membaseconfig1;
unsigned int prechconfig_tp_cnt;
unsigned int dpwrdn_cyc;
unsigned int dsref_cyc;
unsigned int concontrol;
/* Channel and Chip Selection */
uint8_t dmc_channels; /* number of memory channels */
uint8_t chips_per_channel; /* number of chips per channel */
uint8_t chips_to_configure; /* number of chips to configure */
uint8_t send_zq_init; /* 1 to send this command */
unsigned int impedance; /* drive strength impedeance */
uint8_t gate_leveling_enable; /* check gate leveling is enabled */
};
/**
* Get the correct memory timings for our selected memory type and speed.
*
* @return pointer to the memory timings that we should use
*/
struct mem_timings *get_mem_timings(void);
#endif
#endif

1
src/cpu/samsung/s5p-common/s5p_gpio.c
View File

@@ -20,6 +20,7 @@
/* FIXME(dhendrix): fix this up so it doesn't require a bunch of #ifdefs... */
#include <common.h>
#include <gpio.h>
//#include <arch/io.h>
#include <gpio.h>
#include <arch/gpio.h>