drivers: net: mc: Report extra memory to Linux

MC firmware need to be aligned to 512M, so minimum 512MB DDR is reserved.
But MC support to work with 128MB or 256MB DDR memory also, in this
case, rest of the memory is not usable.
So reporting this extra memory to Linux through dtb memory fixup.

Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>

diff --git a/board/freescale/ls1088a/ls1088a.c b/board/freescale/ls1088a/ls1088a.c
index f0bea73..690adc4 100644 (file)
--- a/board/freescale/ls1088a/ls1088a.c
+++ b/board/freescale/ls1088a/ls1088a.c
@@ -739,11 +739,26 @@ void fsl_fdt_fixup_flash(void *fdt)
 int ft_board_setup(void *blob, bd_t *bd)
 {
        int i;
-       u64 base[CONFIG_NR_DRAM_BANKS];
-       u64 size[CONFIG_NR_DRAM_BANKS];
+       u16 mc_memory_bank = 0;
+
+       u64 *base;
+       u64 *size;
+       u64 mc_memory_base = 0;
+       u64 mc_memory_size = 0;
+       u16 total_memory_banks;
 
        ft_cpu_setup(blob, bd);
 
+       fdt_fixup_mc_ddr(&mc_memory_base, &mc_memory_size);
+
+       if (mc_memory_base != 0)
+               mc_memory_bank++;
+
+       total_memory_banks = CONFIG_NR_DRAM_BANKS + mc_memory_bank;
+
+       base = calloc(total_memory_banks, sizeof(u64));
+       size = calloc(total_memory_banks, sizeof(u64));
+
        /* fixup DT for the two GPP DDR banks */
        for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
                base[i] = gd->bd->bi_dram[i].start;
@@ -760,7 +775,17 @@ int ft_board_setup(void *blob, bd_t *bd)
                size[1] = gd->arch.resv_ram - base[1];
 #endif
 
-       fdt_fixup_memory_banks(blob, base, size, CONFIG_NR_DRAM_BANKS);
+       if (mc_memory_base != 0) {
+               for (i = 0; i <= total_memory_banks; i++) {
+                       if (base[i] == 0 && size[i] == 0) {
+                               base[i] = mc_memory_base;
+                               size[i] = mc_memory_size;
+                               break;
+                       }
+               }
+       }
+
+       fdt_fixup_memory_banks(blob, base, size, total_memory_banks);
 
        fdt_fsl_mc_fixup_iommu_map_entry(blob);
 

diff --git a/board/freescale/ls2080ardb/ls2080ardb.c b/board/freescale/ls2080ardb/ls2080ardb.c
index 2b2dbbb..e000b1f 100644 (file)
--- a/board/freescale/ls2080ardb/ls2080ardb.c
+++ b/board/freescale/ls2080ardb/ls2080ardb.c
@@ -410,11 +410,27 @@ void fsl_fdt_fixup_flash(void *fdt)
 
 int ft_board_setup(void *blob, bd_t *bd)
 {
-       u64 base[CONFIG_NR_DRAM_BANKS];
-       u64 size[CONFIG_NR_DRAM_BANKS];
+       int i;
+       u16 mc_memory_bank = 0;
+
+       u64 *base;
+       u64 *size;
+       u64 mc_memory_base = 0;
+       u64 mc_memory_size = 0;
+       u16 total_memory_banks;
 
        ft_cpu_setup(blob, bd);
 
+       fdt_fixup_mc_ddr(&mc_memory_base, &mc_memory_size);
+
+       if (mc_memory_base != 0)
+               mc_memory_bank++;
+
+       total_memory_banks = CONFIG_NR_DRAM_BANKS + mc_memory_bank;
+
+       base = calloc(total_memory_banks, sizeof(u64));
+       size = calloc(total_memory_banks, sizeof(u64));
+
        /* fixup DT for the two GPP DDR banks */
        base[0] = gd->bd->bi_dram[0].start;
        size[0] = gd->bd->bi_dram[0].size;
@@ -431,7 +447,17 @@ int ft_board_setup(void *blob, bd_t *bd)
                size[1] = gd->arch.resv_ram - base[1];
 #endif
 
-       fdt_fixup_memory_banks(blob, base, size, 2);
+       if (mc_memory_base != 0) {
+               for (i = 0; i <= total_memory_banks; i++) {
+                       if (base[i] == 0 && size[i] == 0) {
+                               base[i] = mc_memory_base;
+                               size[i] = mc_memory_size;
+                               break;
+                       }
+               }
+       }
+
+       fdt_fixup_memory_banks(blob, base, size, total_memory_banks);
 
        fdt_fsl_mc_fixup_iommu_map_entry(blob);
 

diff --git a/board/freescale/lx2160a/lx2160a.c b/board/freescale/lx2160a/lx2160a.c
index f3885fa..3dfbfeb 100644 (file)
--- a/board/freescale/lx2160a/lx2160a.c
+++ b/board/freescale/lx2160a/lx2160a.c
@@ -529,11 +529,26 @@ void board_quiesce_devices(void)
 int ft_board_setup(void *blob, bd_t *bd)
 {
        int i;
-       u64 base[CONFIG_NR_DRAM_BANKS];
-       u64 size[CONFIG_NR_DRAM_BANKS];
+       u16 mc_memory_bank = 0;
+
+       u64 *base;
+       u64 *size;
+       u64 mc_memory_base = 0;
+       u64 mc_memory_size = 0;
+       u16 total_memory_banks;
 
        ft_cpu_setup(blob, bd);
 
+       fdt_fixup_mc_ddr(&mc_memory_base, &mc_memory_size);
+
+       if (mc_memory_base != 0)
+               mc_memory_bank++;
+
+       total_memory_banks = CONFIG_NR_DRAM_BANKS + mc_memory_bank;
+
+       base = calloc(total_memory_banks, sizeof(u64));
+       size = calloc(total_memory_banks, sizeof(u64));
+
        /* fixup DT for the three GPP DDR banks */
        for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
                base[i] = gd->bd->bi_dram[i].start;
@@ -553,7 +568,17 @@ int ft_board_setup(void *blob, bd_t *bd)
                size[2] = gd->arch.resv_ram - base[2];
 #endif
 
-       fdt_fixup_memory_banks(blob, base, size, CONFIG_NR_DRAM_BANKS);
+       if (mc_memory_base != 0) {
+               for (i = 0; i <= total_memory_banks; i++) {
+                       if (base[i] == 0 && size[i] == 0) {
+                               base[i] = mc_memory_base;
+                               size[i] = mc_memory_size;
+                               break;
+                       }
+               }
+       }
+
+       fdt_fixup_memory_banks(blob, base, size, total_memory_banks);
 
 #ifdef CONFIG_USB
        fsl_fdt_fixup_dr_usb(blob, bd);

diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c
index 1d96e4b..c980ba4 100644 (file)
--- a/drivers/net/fsl-mc/mc.c
+++ b/drivers/net/fsl-mc/mc.c
@@ -282,6 +282,16 @@ static int mc_fixup_dpl_mac_addr(void *blob, int dpmac_id,
                                 MC_FIXUP_DPL);
 }
 
+void fdt_fixup_mc_ddr(u64 *base, u64 *size)
+{
+       u64 mc_size = mc_get_dram_block_size();
+
+       if (mc_size < MC_DRAM_BLOCK_DEFAULT_SIZE) {
+               *base = mc_get_dram_addr() + mc_size;
+               *size = MC_DRAM_BLOCK_DEFAULT_SIZE - mc_size;
+       }
+}
+
 void fdt_fsl_mc_fixup_iommu_map_entry(void *blob)
 {
        u32 *prop;

diff --git a/include/fsl-mc/fsl_mc.h b/include/fsl-mc/fsl_mc.h
index 0abd797..a4d7d85 100644 (file)
--- a/include/fsl-mc/fsl_mc.h
+++ b/include/fsl-mc/fsl_mc.h
@@ -55,6 +55,7 @@ void fdt_fsl_mc_fixup_iommu_map_entry(void *blob);
 int get_mc_boot_status(void);
 int get_dpl_apply_status(void);
 int is_lazy_dpl_addr_valid(void);
+void fdt_fixup_mc_ddr(u64 *base, u64 *size);
 #ifdef CONFIG_SYS_LS_MC_DRAM_AIOP_IMG_OFFSET
 int get_aiop_apply_status(void);
 #endif