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-rw-r--r--post/cpu/ppc4xx/cache.c16
-rw-r--r--post/cpu/ppc4xx/cache_4xx.S44
-rw-r--r--post/cpu/ppc4xx/ether.c9
-rw-r--r--post/cpu/ppc4xx/uart.c176
4 files changed, 237 insertions, 8 deletions
diff --git a/post/cpu/ppc4xx/cache.c b/post/cpu/ppc4xx/cache.c
index e1f989e..109ca1f 100644
--- a/post/cpu/ppc4xx/cache.c
+++ b/post/cpu/ppc4xx/cache.c
@@ -53,14 +53,25 @@ int cache_post_test6 (int tlb, void *p, int size);
static int tlb = -1; /* index to the victim TLB entry */
+#ifdef CONFIG_440
static unsigned char testarea[CACHE_POST_SIZE]
__attribute__((__aligned__(CACHE_POST_SIZE)));
+#endif
int cache_post_test (int flags)
{
void* virt = (void*)CFG_POST_CACHE_ADDR;
- int ints, i, res = 0;
- u32 word0;
+ int ints;
+ int res = 0;
+
+ /*
+ * All 44x variants deal with cache management differently
+ * because they have the address translation always enabled.
+ * The 40x ppc's don't use address translation in U-Boot at all,
+ * so we have to distinguish here between 40x and 44x.
+ */
+#ifdef CONFIG_440
+ int word0, i;
if (tlb < 0) {
/*
@@ -83,6 +94,7 @@ int cache_post_test (int flags)
}
}
}
+#endif
ints = disable_interrupts ();
WATCHDOG_RESET ();
diff --git a/post/cpu/ppc4xx/cache_4xx.S b/post/cpu/ppc4xx/cache_4xx.S
index dddd76b..d5cb075 100644
--- a/post/cpu/ppc4xx/cache_4xx.S
+++ b/post/cpu/ppc4xx/cache_4xx.S
@@ -37,6 +37,13 @@
.text
+ /*
+ * All 44x variants deal with cache management differently
+ * because they have the address translation always enabled.
+ * The 40x ppc's don't use address translation in U-Boot at all,
+ * so we have to distinguish here between 40x and 44x.
+ */
+#ifdef CONFIG_440
/* void cache_post_disable (int tlb)
*/
cache_post_disable:
@@ -68,6 +75,43 @@ cache_post_wb:
sync
isync
blr
+#else
+/* void cache_post_disable (int tlb)
+ */
+cache_post_disable:
+ lis r0, 0x0000
+ ori r0, r0, 0x0000
+ mtdccr r0
+ sync
+ isync
+ blr
+
+/* void cache_post_wt (int tlb)
+ */
+cache_post_wt:
+ lis r0, 0x8000
+ ori r0, r0, 0x0000
+ mtdccr r0
+ lis r0, 0x8000
+ ori r0, r0, 0x0000
+ mtdcwr r0
+ sync
+ isync
+ blr
+
+/* void cache_post_wb (int tlb)
+ */
+cache_post_wb:
+ lis r0, 0x8000
+ ori r0, r0, 0x0000
+ mtdccr r0
+ lis r0, 0x0000
+ ori r0, r0, 0x0000
+ mtdcwr r0
+ sync
+ isync
+ blr
+#endif
/* void cache_post_dinvalidate (void *p, int size)
*/
diff --git a/post/cpu/ppc4xx/ether.c b/post/cpu/ppc4xx/ether.c
index 391c815..ab23ca5 100644
--- a/post/cpu/ppc4xx/ether.c
+++ b/post/cpu/ppc4xx/ether.c
@@ -68,10 +68,10 @@ static char *rx_buf;
static void ether_post_init (int devnum, int hw_addr)
{
int i;
- unsigned mode_reg;
#if defined(CONFIG_440GX) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+ unsigned mode_reg;
sys_info_t sysinfo;
#endif
#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || defined(CONFIG_440SPE)
@@ -185,10 +185,17 @@ static void ether_post_init (int devnum, int hw_addr)
mtdcr (malrxcasr, (MAL_TXRX_CASR >> devnum));
/* set internal loopback mode */
+#ifdef CFG_POST_ETHER_EXT_LOOPBACK
+ out32 (EMAC_M1 + hw_addr, EMAC_M1_FDE | 0 |
+ EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K |
+ EMAC_M1_MF_100MBPS | EMAC_M1_IST |
+ in32 (EMAC_M1));
+#else
out32 (EMAC_M1 + hw_addr, EMAC_M1_FDE | EMAC_M1_ILE |
EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K |
EMAC_M1_MF_100MBPS | EMAC_M1_IST |
in32 (EMAC_M1));
+#endif
/* set transmit enable & receive enable */
out32 (EMAC_M0 + hw_addr, EMAC_M0_TXE | EMAC_M0_RXE);
diff --git a/post/cpu/ppc4xx/uart.c b/post/cpu/ppc4xx/uart.c
index b047d42..7c3ed40 100644
--- a/post/cpu/ppc4xx/uart.c
+++ b/post/cpu/ppc4xx/uart.c
@@ -38,24 +38,77 @@
#if CONFIG_POST & CFG_POST_UART
+/*
+ * This table defines the UART's that should be tested and can
+ * be overridden in the board config file
+ */
+#ifndef CFG_POST_UART_TABLE
+#define CFG_POST_UART_TABLE {UART0_BASE, UART1_BASE, UART2_BASE, UART3_BASE}
+#endif
+
#include <asm/processor.h>
#include <serial.h>
+#if defined(CONFIG_440)
+#if defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
+ defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
#define UART0_BASE CFG_PERIPHERAL_BASE + 0x00000300
#define UART1_BASE CFG_PERIPHERAL_BASE + 0x00000400
#define UART2_BASE CFG_PERIPHERAL_BASE + 0x00000500
#define UART3_BASE CFG_PERIPHERAL_BASE + 0x00000600
+#else
+#define UART0_BASE CFG_PERIPHERAL_BASE + 0x00000200
+#define UART1_BASE CFG_PERIPHERAL_BASE + 0x00000300
+#endif
+
+#if defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+#define UART2_BASE CFG_PERIPHERAL_BASE + 0x00000600
+#endif
+#if defined(CONFIG_440GP)
+#define CR0_MASK 0x3fff0000
+#define CR0_EXTCLK_ENA 0x00600000
+#define CR0_UDIV_POS 16
+#define UDIV_SUBTRACT 1
+#define UART0_SDR cntrl0
+#define MFREG(a, d) d = mfdcr(a)
+#define MTREG(a, d) mtdcr(a, d)
+#else /* #if defined(CONFIG_440GP) */
+/* all other 440 PPC's access clock divider via sdr register */
#define CR0_MASK 0xdfffffff
#define CR0_EXTCLK_ENA 0x00800000
#define CR0_UDIV_POS 0
#define UDIV_SUBTRACT 0
#define UART0_SDR sdr_uart0
#define UART1_SDR sdr_uart1
+#if defined(CONFIG_440EP) || defined(CONFIG_440EPx) || \
+ defined(CONFIG_440GR) || defined(CONFIG_440GRx) || \
+ defined(CONFIG_440SP) || defined(CONFIG_440SPe)
#define UART2_SDR sdr_uart2
+#endif
+#if defined(CONFIG_440EP) || defined(CONFIG_440EPx) || \
+ defined(CONFIG_440GR) || defined(CONFIG_440GRx)
#define UART3_SDR sdr_uart3
+#endif
#define MFREG(a, d) mfsdr(a, d)
#define MTREG(a, d) mtsdr(a, d)
+#endif /* #if defined(CONFIG_440GP) */
+#elif defined(CONFIG_405EP) || defined(CONFIG_405EZ)
+#define UART0_BASE 0xef600300
+#define UART1_BASE 0xef600400
+#define UCR0_MASK 0x0000007f
+#define UCR1_MASK 0x00007f00
+#define UCR0_UDIV_POS 0
+#define UCR1_UDIV_POS 8
+#define UDIV_MAX 127
+#else /* CONFIG_405GP || CONFIG_405CR */
+#define UART0_BASE 0xef600300
+#define UART1_BASE 0xef600400
+#define CR0_MASK 0x00001fff
+#define CR0_EXTCLK_ENA 0x000000c0
+#define CR0_UDIV_POS 1
+#define UDIV_MAX 32
+#endif
#define UART_RBR 0x00
#define UART_THR 0x00
@@ -71,8 +124,8 @@
#define UART_DLM 0x01
/*
- Line Status Register.
-*/
+ * Line Status Register.
+ */
#define asyncLSRDataReady1 0x01
#define asyncLSROverrunError1 0x02
#define asyncLSRParityError1 0x04
@@ -84,6 +137,50 @@
DECLARE_GLOBAL_DATA_PTR;
+#if defined(CONFIG_440)
+#if !defined(CFG_EXT_SERIAL_CLOCK)
+static void serial_divs (int baudrate, unsigned long *pudiv,
+ unsigned short *pbdiv)
+{
+ sys_info_t sysinfo;
+ unsigned long div; /* total divisor udiv * bdiv */
+ unsigned long umin; /* minimum udiv */
+ unsigned short diff; /* smallest diff */
+ unsigned long udiv; /* best udiv */
+ unsigned short idiff; /* current diff */
+ unsigned short ibdiv; /* current bdiv */
+ unsigned long i;
+ unsigned long est; /* current estimate */
+
+ get_sys_info(&sysinfo);
+
+ udiv = 32; /* Assume lowest possible serial clk */
+ div = sysinfo.freqPLB / (16 * baudrate); /* total divisor */
+ umin = sysinfo.pllOpbDiv << 1; /* 2 x OPB divisor */
+ diff = 32; /* highest possible */
+
+ /* i is the test udiv value -- start with the largest
+ * possible (32) to minimize serial clock and constrain
+ * search to umin.
+ */
+ for (i = 32; i > umin; i--) {
+ ibdiv = div / i;
+ est = i * ibdiv;
+ idiff = (est > div) ? (est-div) : (div-est);
+ if (idiff == 0) {
+ udiv = i;
+ break; /* can't do better */
+ } else if (idiff < diff) {
+ udiv = i; /* best so far */
+ diff = idiff; /* update lowest diff*/
+ }
+ }
+
+ *pudiv = udiv;
+ *pbdiv = div / udiv;
+}
+#endif
+
static int uart_post_init (unsigned long dev_base)
{
unsigned long reg;
@@ -147,6 +244,77 @@ static int uart_post_init (unsigned long dev_base)
return 0;
}
+#else /* CONFIG_440 */
+
+static int uart_post_init (unsigned long dev_base)
+{
+ unsigned long reg;
+ unsigned long tmp;
+ unsigned long clk;
+ unsigned long udiv;
+ unsigned short bdiv;
+ volatile char val;
+ int i;
+
+ for (i = 0; i < 3500; i++) {
+ if (in8 (dev_base + UART_LSR) & asyncLSRTxHoldEmpty1)
+ break;
+ udelay (100);
+ }
+
+#if defined(CONFIG_405EZ)
+ serial_divs(gd->baudrate, &udiv, &bdiv);
+ clk = tmp = reg = 0;
+#else
+#ifdef CONFIG_405EP
+ reg = mfdcr(cpc0_ucr) & ~(UCR0_MASK | UCR1_MASK);
+ clk = gd->cpu_clk;
+ tmp = CFG_BASE_BAUD * 16;
+ udiv = (clk + tmp / 2) / tmp;
+ if (udiv > UDIV_MAX) /* max. n bits for udiv */
+ udiv = UDIV_MAX;
+ reg |= (udiv) << UCR0_UDIV_POS; /* set the UART divisor */
+ reg |= (udiv) << UCR1_UDIV_POS; /* set the UART divisor */
+ mtdcr (cpc0_ucr, reg);
+#else /* CONFIG_405EP */
+ reg = mfdcr(cntrl0) & ~CR0_MASK;
+#ifdef CFG_EXT_SERIAL_CLOCK
+ clk = CFG_EXT_SERIAL_CLOCK;
+ udiv = 1;
+ reg |= CR0_EXTCLK_ENA;
+#else
+ clk = gd->cpu_clk;
+#ifdef CFG_405_UART_ERRATA_59
+ udiv = 31; /* Errata 59: stuck at 31 */
+#else
+ tmp = CFG_BASE_BAUD * 16;
+ udiv = (clk + tmp / 2) / tmp;
+ if (udiv > UDIV_MAX) /* max. n bits for udiv */
+ udiv = UDIV_MAX;
+#endif
+#endif
+ reg |= (udiv - 1) << CR0_UDIV_POS; /* set the UART divisor */
+ mtdcr (cntrl0, reg);
+#endif /* CONFIG_405EP */
+ tmp = gd->baudrate * udiv * 16;
+ bdiv = (clk + tmp / 2) / tmp;
+#endif /* CONFIG_405EZ */
+
+ out8(dev_base + UART_LCR, 0x80); /* set DLAB bit */
+ out8(dev_base + UART_DLL, bdiv); /* set baudrate divisor */
+ out8(dev_base + UART_DLM, bdiv >> 8); /* set baudrate divisor */
+ out8(dev_base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */
+ out8(dev_base + UART_FCR, 0x00); /* disable FIFO */
+ out8(dev_base + UART_MCR, 0x10); /* enable loopback mode */
+ val = in8(dev_base + UART_LSR); /* clear line status */
+ val = in8(dev_base + UART_RBR); /* read receive buffer */
+ out8(dev_base + UART_SCR, 0x00); /* set scratchpad */
+ out8(dev_base + UART_IER, 0x00); /* set interrupt enable reg */
+
+ return (0);
+}
+#endif /* CONFIG_440 */
+
static void uart_post_putc (unsigned long dev_base, char c)
{
int i;
@@ -198,9 +366,7 @@ done:
int uart_post_test (int flags)
{
int i, res = 0;
- static unsigned long base[] = {
- UART0_BASE, UART1_BASE, UART2_BASE, UART3_BASE
- };
+ static unsigned long base[] = CFG_POST_UART_TABLE;
for (i = 0; i < sizeof (base) / sizeof (base[0]); i++) {
if (test_ctlr (base[i], i))
generated by cgit v1.1 at 2024-12-18 00:40:32 +0000