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Nano2G NAND: Detect if the chip supports interleaved and/or cached writes.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25171 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sparmann 2010-03-14 16:10:53 +00:00
parent 7e4b53892e
commit 4d8bf06bf3
1 changed files with 6 additions and 2 deletions
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8
firmware/target/arm/s5l8700/ipodnano2g/nand-nano2g.c
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@ -89,6 +89,8 @@ uint8_t nand_tunk2[4];
uint8_t nand_tunk3[4]; uint8_t nand_tunk3[4];
uint32_t nand_type[4]; uint32_t nand_type[4];
int nand_powered = 0; int nand_powered = 0;
int nand_interleaved = 0;
int nand_cached = 0;
long nand_last_activity_value = -1; long nand_last_activity_value = -1;
static long nand_stack[32]; static long nand_stack[32];
@ -643,8 +645,8 @@ uint32_t nand_write_page_start(uint32_t bank, uint32_t page, void* databuffer,
void* sparebuffer, uint32_t doecc) void* sparebuffer, uint32_t doecc)
{ {
if (((uint32_t)databuffer & 0xf) || ((uint32_t)sparebuffer & 0xf) if (((uint32_t)databuffer & 0xf) || ((uint32_t)sparebuffer & 0xf)
|| !databuffer || !sparebuffer || !doecc) || !databuffer || !sparebuffer || !doecc || !nand_interleaved)
return nand_write_page_int(bank, page, databuffer, sparebuffer, doecc, 0); return nand_write_page_int(bank, page, databuffer, sparebuffer, doecc, !nand_interleaved);
mutex_lock(&nand_mtx); mutex_lock(&nand_mtx);
nand_last_activity_value = current_tick; nand_last_activity_value = current_tick;
@ -769,6 +771,8 @@ uint32_t nand_device_init(void)
nand_tunk3[i] = nand_deviceinfotable[nand_type[i]].tunk3; nand_tunk3[i] = nand_deviceinfotable[nand_type[i]].tunk3;
} }
if (nand_type[0] == 0xFFFFFFFF) return 1; if (nand_type[0] == 0xFFFFFFFF) return 1;
nand_interleaved = ((nand_type[0] >> 22) & 1);
nand_cached = ((nand_type[0] >> 23) & 1);
nand_last_activity_value = current_tick; nand_last_activity_value = current_tick;
create_thread(nand_thread, nand_stack, create_thread(nand_thread, nand_stack,