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lib: bidram: handle only-one dram bank available situation 

LMB default init lmb->reserved.region[0] as zero.

Change-Id: Ib46d9630581bb3a03c5846288b16ae805e3e6944
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
This commit is contained in:
Joseph Chen 2019-03-27 11:53:16 +08:00
parent 623d03d621
commit 356575c3e2
1 changed files with 18 additions and 1 deletions
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19
lib/bidram.c
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@ -130,6 +130,20 @@ void bidram_gen_gd_bi_dram(void)
return;
}
/*
* LBM default init:
* lmb->reserved.cnt = 1;
* lmb->reserved.region[0].base = 0;
* lmb->reserved.region[0].size = 0;
*
* Here handle that: there is the only one dram bank available.
*/
if (rsv_cnt == 1 && !res_rgn[0].base && !res_rgn[0].size) {
gd->bd->bi_dram[0].start = mem_rgn[0].base;
gd->bd->bi_dram[0].size = mem_rgn[0].size;
goto done;
}
/* If reserved rgn is not from sdram start */
if (res_rgn[0].base != mem_rgn[0].base) {
gd->bd->bi_dram[idx].start = mem_rgn[0].base;
@ -209,7 +223,7 @@ static int bidram_core_reserve(enum memblk_id id, const char *mem_name,
/* Check overlap */
list_for_each(node, &bidram->reserved_head) {
mem = list_entry(node, struct memblock, node);
BIDRAM_D("Reserved: %s 0x%08lx - 0x%08lx\n",
BIDRAM_D("Has reserved: %s 0x%08lx - 0x%08lx\n",
mem->attr.name, (ulong)mem->base,
(ulong)(mem->base + mem->size));
if (!strcmp(mem->attr.name, name)) {
@ -224,6 +238,9 @@ static int bidram_core_reserve(enum memblk_id id, const char *mem_name,
}
}
BIDRAM_D("Reserve: \"%s\" 0x%08lx - 0x%08lx\n",
name, (ulong)base, (ulong)(base + size));
ret = lmb_reserve(&bidram->lmb, base, size);
if (ret >= 0) {
mem = malloc(sizeof(*mem));