Re: [U-Boot] [PATCH v3 3/3] ppc/p1_p2_RDB: DDR Relocation support for NAND/SD/eSPI Boot

9 Oct 2009


      -----Original Message-----
From: Kumar Gala [mailto:galak@kernel.crashing.org] 
Sent: Friday, October 09, 2009 11:51 PM
To: Dudhat Dipen-B09055
Cc: u-boot@lists.denx.de
Subject: Re: [U-Boot] [PATCH v3 3/3] ppc/p1_p2_RDB: DDR Relocation
support for NAND/SD/eSPI Boot
On Oct 9, 2009, at 12:42 PM, Dipen Dudhat wrote:
...
+void initsdram(void)
+{


volatile ccsr_ddr_t *ddr= (ccsr_ddr_t

*)CONFIG_SYS_MPC85xx_DDR_ADDR;
...

int d_init, dbw;
volatile ccsr_gpio_t *pgpio = (void *)

(CONFIG_SYS_MPC85xx_GPIO_ADDR);

unsigned int ddr_size;
sys_info_t sysinfo;
phys_size_t dram_size = 0;

set_next_law(0,LAW_SIZE_1G , LAW_TRGT_IF_DDR_1);

out_be32(&ddr->cs0_bnds, CONFIG_SYS_DDR_CS0_BNDS);
out_be32(&ddr->cs0_config, CONFIG_SYS_DDR_CS0_CONFIG);
out_be32(&ddr->cs0_config_2, CONFIG_SYS_DDR_CS0_CONFIG_2);

out_be32(&ddr->timing_cfg_3, CONFIG_SYS_DDR_TIMING_3_667);
out_be32(&ddr->timing_cfg_0, CONFIG_SYS_DDR_TIMING_0_667);
out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1_667);
out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2_667);
out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1_667);
out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2_667);
out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL_667);
out_be32(&ddr->sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CTRL_667);
out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL);
out_be32(&ddr->sdram_cfg_2, CONFIG_SYS_DDR_CONTROL_2);

did fsl_ddr_set_memctl_regs() not work?
This function will take more space as we have only 4K space here.
And this function contains 'printf' statements which is not valid.
So I think this is the simplest approach, as fsl_ddr_set_memctl_regs()
is doing the same thing.
What do you suggest??
- Dipen