void kgdb_params_early_init(void)
{
mtspr(SPRN_M_TWB, virt_to_phys(tmp_sw_page));
#ifdef CONFIG_PPC_8xx
__initial_memory_limit = 0x800000;
#endif
get_from_flat_dt("cpu", "clock-frequency", &ppc_proc_freq);
get_from_flat_dt("soc", "reg", &immrbase);
get_from_flat_dt("cpm", "brg-frequency", &brgfreq);
#ifdef CONFIG_PPC_EP88XC
cpm_reset();
init_ioports();
#ifdef CONFIG_KGDB_CPM_UART_SMC1
cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
#endif
#ifdef CONFIG_KGDB_CPM_UART_SCC2
cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
#endif
#else
/* early dpmem init */
m8xx_cpm_dpinit();
#endif
}
void
m8xx_cpm_reset(uint host_page_addr)
{
volatile immap_t *imp;
volatile cpm8xx_t *commproc;
pte_t *pte;
imp = (immap_t *)IMAP_ADDR;
commproc = (cpm8xx_t *)&imp->im_cpm;
#ifdef CONFIG_UCODE_PATCH
/* Perform a reset.
*/
commproc->cp_cpcr = (CPM_CR_RST | CPM_CR_FLG);
/* Wait for it.
*/
while (commproc->cp_cpcr & CPM_CR_FLG);
cpm_load_patch(imp);
#endif
/* Set SDMA Bus Request priority 5.
* On 860T, this also enables FEC priority 6. I am not sure
* this is what we realy want for some applications, but the
* manual recommends it.
* Bit 25, FAM can also be set to use FEC aggressive mode (860T).
*/
imp->im_siu_conf.sc_sdcr = 1;
/* Reclaim the DP memory for our use. */
m8xx_cpm_dpinit();
/* Set the host page for allocation.
*/
host_buffer = host_page_addr; /* Host virtual page address */
host_end = host_page_addr + PAGE_SIZE;
/* We need to get this page early, so I have to do it the
* hard way.
*/
if (get_pteptr(&init_mm, host_page_addr, &pte)) {
pte_val(*pte) |= _PAGE_NO_CACHE;
flush_tlb_page(init_mm.mmap, host_buffer);
}
else {
panic("Huh? No CPM host page?");
}
/* Tell everyone where the comm processor resides.
*/
cpmp = (cpm8xx_t *)commproc;
}
void
m8xx_cpm_reset(void)
{
volatile immap_t *imp;
volatile cpm8xx_t *commproc;
imp = (immap_t *)IMAP_ADDR;
commproc = (cpm8xx_t *)&imp->im_cpm;
#ifdef CONFIG_UCODE_PATCH
/* Perform a reset.
*/
commproc->cp_cpcr = (CPM_CR_RST | CPM_CR_FLG);
/* Wait for it.
*/
while (commproc->cp_cpcr & CPM_CR_FLG);
cpm_load_patch(imp);
#endif
/* Set SDMA Bus Request priority 5.
* On 860T, this also enables FEC priority 6. I am not sure
* this is what we really want for some applications, but the
* manual recommends it.
* Bit 25, FAM can also be set to use FEC aggressive mode (860T).
*/
out_be32(&imp->im_siu_conf.sc_sdcr, 1),
/* Reclaim the DP memory for our use. */
m8xx_cpm_dpinit();
/* Tell everyone where the comm processor resides.
*/
cpmp = (cpm8xx_t *)commproc;
}
void cpm_reset(void)
{
cpm8xx_t *commproc;
sysconf8xx_t *siu_conf;
commproc = (cpm8xx_t *)ioremap(CPM_MAP_ADDR, CPM_MAP_SIZE);
#ifdef CONFIG_UCODE_PATCH
/* Perform a reset.
*/
out_be16(&commproc->cp_cpcr, CPM_CR_RST | CPM_CR_FLG);
/* Wait for it.
*/
while (in_be16(&commproc->cp_cpcr) & CPM_CR_FLG);
cpm_load_patch(commproc);
#endif
/* Set SDMA Bus Request priority 5.
* On 860T, this also enables FEC priority 6. I am not sure
* this is what we realy want for some applications, but the
* manual recommends it.
* Bit 25, FAM can also be set to use FEC aggressive mode (860T).
*/
siu_conf = (sysconf8xx_t*)immr_map(im_siu_conf);
out_be32(&siu_conf->sc_sdcr, 1);
immr_unmap(siu_conf);
/* Reclaim the DP memory for our use. */
m8xx_cpm_dpinit();
/* Tell everyone where the comm processor resides.
*/
cpmp = commproc;
}
