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 --- board/freescale/b4860qds/ddr.c | 72 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+)
diff --git a/board/freescale/b4860qds/ddr.c b/board/freescale/b4860qds/ddr.c index dd4c0f6..b82b3d4 100644 --- a/board/freescale/b4860qds/ddr.c +++ b/board/freescale/b4860qds/ddr.c @@ -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; +}