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| author | York Sun <yorksun@freescale.com> | 2013-06-25 11:37:41 -0700 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2013-08-09 12:41:38 -0700 |
| commit | cb93071bb6da21d17dd7d7d414a389b380f959b2 (patch) | |
| tree | ef8cc19e0c01b00baeda237802d4b6b383d5e5f7 | |
| parent | 7adefb55adf3e55f3788c3b9682ba91d29da2595 (diff) | |
| download | talos-obmc-uboot-cb93071bb6da21d17dd7d7d414a389b380f959b2.tar.gz talos-obmc-uboot-cb93071bb6da21d17dd7d7d414a389b380f959b2.zip | |
mpc85xx: Base emulator support
Prepare for emulator support for mpc85xx parts.
Disable DDR training and skip wrlvl_cntl_2 and wrlvl_cntl_3 registers.
These two registers improve stability but not supported by emulator.
Add CONFIG_FSL_TBCLK_EXTRA_DIV for possible adjustment to time base.
Signed-off-by: York Sun <yorksun@freescale.com>
| -rw-r--r-- | README | 4 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cpu_init.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/ddr-gen3.c | 7 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/fdt.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c | 5 |
5 files changed, 23 insertions, 1 deletions
@@ -413,6 +413,10 @@ The following options need to be configured: CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT This value denotes start offset of DSP CCSR space. + CONFIG_SYS_FSL_DDR_EMU + Specify emulator support for DDR. Some DDR features such as + deskew training are not available. + - Generic CPU options: CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index 25beda233e..1774462a42 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -532,8 +532,10 @@ skip_l2: enable_cpc(); +#ifndef CONFIG_SYS_FSL_NO_SERDES /* needs to be in ram since code uses global static vars */ fsl_serdes_init(); +#endif #ifdef CONFIG_SYS_FSL_ERRATUM_A005871 if (IS_SVR_REV(svr, 1, 0)) { diff --git a/arch/powerpc/cpu/mpc85xx/ddr-gen3.c b/arch/powerpc/cpu/mpc85xx/ddr-gen3.c index c5b47200e0..3e7a56489f 100644 --- a/arch/powerpc/cpu/mpc85xx/ddr-gen3.c +++ b/arch/powerpc/cpu/mpc85xx/ddr-gen3.c @@ -123,10 +123,17 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs, out_be32(&ddr->timing_cfg_5, regs->timing_cfg_5); out_be32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl); out_be32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl); +#ifndef CONFIG_SYS_FSL_DDR_EMU + /* + * Skip these two registers if running on emulator + * because emulator doesn't have skew between bytes. + */ + if (regs->ddr_wrlvl_cntl_2) out_be32(&ddr->ddr_wrlvl_cntl_2, regs->ddr_wrlvl_cntl_2); if (regs->ddr_wrlvl_cntl_3) out_be32(&ddr->ddr_wrlvl_cntl_3, regs->ddr_wrlvl_cntl_3); +#endif out_be32(&ddr->ddr_sr_cntr, regs->ddr_sr_cntr); out_be32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1); diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c index cfaa2edced..84bb8fab8f 100644 --- a/arch/powerpc/cpu/mpc85xx/fdt.c +++ b/arch/powerpc/cpu/mpc85xx/fdt.c @@ -604,8 +604,12 @@ void ft_cpu_setup(void *blob, bd_t *bd) fdt_add_enet_stashing(blob); +#ifndef CONFIG_FSL_TBCLK_EXTRA_DIV +#define CONFIG_FSL_TBCLK_EXTRA_DIV 1 +#endif do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, - "timebase-frequency", get_tbclk(), 1); + "timebase-frequency", get_tbclk() / CONFIG_FSL_TBCLK_EXTRA_DIV, + 1); do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, "bus-frequency", bd->bi_busfreq, 1); get_sys_info(&sysinfo); diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c b/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c index ff5812df55..0f73e9c6c6 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c @@ -1638,5 +1638,10 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts, set_ddr_sdram_rcw(ddr, popts, common_dimm); +#ifdef CONFIG_SYS_FSL_DDR_EMU + /* disble DDR training for emulator */ + ddr->debug[2] = 0x00000400; + ddr->debug[4] = 0xff800000; +#endif return check_fsl_memctl_config_regs(ddr); } |
