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powerpc/b4860qds: Assign DDR address in board file 

B4860QDS requires DDRC2 has 0 as base address and DDRC1 has higher address.
This is the requirement for DSP cores to run in 32-bit address space.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
York Sun 2013-03-25 07:39:36 +00:00 committed by Andy Fleming
parent ef00227551
commit 431047955b
1 changed files with 72 additions and 0 deletions
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72
board/freescale/b4860qds/ddr.c
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@ -13,6 +13,7 @@
#include <asm/fsl_ddr_sdram.h>
#include <asm/fsl_ddr_dimm_params.h>
#include <asm/fsl_law.h>
#include <../arch/powerpc/cpu/mpc8xxx/ddr/ddr.h>
DECLARE_GLOBAL_DATA_PTR;
@ -188,3 +189,74 @@ phys_size_t initdram(int board_type)
puts(" DDR: ");
return dram_size;
}
unsigned long long step_assign_addresses(fsl_ddr_info_t *pinfo,
unsigned int dbw_cap_adj[])
{
int i, j;
unsigned long long total_mem, current_mem_base, total_ctlr_mem;
unsigned long long rank_density, ctlr_density = 0;
current_mem_base = 0ull;
total_mem = 0;
/*
* This board has soldered DDR chips. DDRC1 has two rank.
* DDRC2 has only one rank.
* Assigning DDRC2 to lower address and DDRC1 to higher address.
*/
if (pinfo->memctl_opts[0].memctl_interleaving) {
rank_density = pinfo->dimm_params[0][0].rank_density >>
dbw_cap_adj[0];
ctlr_density = rank_density;
debug("rank density is 0x%llx, ctlr density is 0x%llx\n",
rank_density, ctlr_density);
for (i = CONFIG_NUM_DDR_CONTROLLERS - 1; i >= 0; i--) {
switch (pinfo->memctl_opts[i].memctl_interleaving_mode) {
case FSL_DDR_CACHE_LINE_INTERLEAVING:
case FSL_DDR_PAGE_INTERLEAVING:
case FSL_DDR_BANK_INTERLEAVING:
case FSL_DDR_SUPERBANK_INTERLEAVING:
total_ctlr_mem = 2 * ctlr_density;
break;
default:
panic("Unknown interleaving mode");
}
pinfo->common_timing_params[i].base_address =
current_mem_base;
pinfo->common_timing_params[i].total_mem =
total_ctlr_mem;
total_mem = current_mem_base + total_ctlr_mem;
debug("ctrl %d base 0x%llx\n", i, current_mem_base);
debug("ctrl %d total 0x%llx\n", i, total_ctlr_mem);
}
} else {
/*
* Simple linear assignment if memory
* controllers are not interleaved.
*/
for (i = CONFIG_NUM_DDR_CONTROLLERS - 1; i >= 0; i--) {
total_ctlr_mem = 0;
pinfo->common_timing_params[i].base_address =
current_mem_base;
for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) {
/* Compute DIMM base addresses. */
unsigned long long cap =
pinfo->dimm_params[i][j].capacity;
pinfo->dimm_params[i][j].base_address =
current_mem_base;
debug("ctrl %d dimm %d base 0x%llx\n",
i, j, current_mem_base);
current_mem_base += cap;
total_ctlr_mem += cap;
}
debug("ctrl %d total 0x%llx\n", i, total_ctlr_mem);
pinfo->common_timing_params[i].total_mem =
total_ctlr_mem;
total_mem += total_ctlr_mem;
}
}
debug("Total mem by %s is 0x%llx\n", __func__, total_mem);
return total_mem;
}